Distribution of the invariant mass of the N N system.

Distribution of the invariant mass of the N PI system.

Distribution of the invariant mass of the N N PI system.

Distribution of the invariant mass of the N PI PI system.

Distribution of the PI+ angle in the centre-of-mass system.

Distribution of the angle of the N-N system in the centre-of-mass system.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 718.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 723.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 727.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 731.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 735.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 739.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 743.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 748.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 752.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 756.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 760.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 768.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 772.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 777.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 781.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 785.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 789.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 793.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 797.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 801.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 805.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 809.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 814.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 818.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 822.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 826.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 830.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 834.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 838.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 842.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 846.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 850.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 854.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 858.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 862.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 866.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 870.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 874.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 878.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 882.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 886.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 890.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 894.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 898.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 902.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 906.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 910.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 914.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 918.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 922.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 926.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 930.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 933.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 937.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 941.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 945.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 949.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 953.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 957.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 960.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 964.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 968.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 972.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 976.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 980.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 983.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 987.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 991.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 995.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 998.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1002.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1006.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1011.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1019.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1026.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1034.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1041.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1048.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1055.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1063.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1070.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1077.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1084.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1091.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1098.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1105.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1112.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1119.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1125.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1132.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1139.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1146.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1152.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1159.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1165.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1172.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1178.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1185.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1191.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1198.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1204.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1210.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1216.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1222.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1229.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1235.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1242.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1251.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1260.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.8 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1268.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1277.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1287.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1300.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.9 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1315.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.8 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1335.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.8 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1355.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.8 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1376.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.9 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1394.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 5.0 PCT.