total observations logged for 1991 = 30679 G Poyner 5483, J Toone 3533, M J Gainsford 2093, S W Albrighton 1882, R A H Paterson 1630, M D Taylor 1409, G Ramsey 1306, R B I Fraser 1121, G Pointer 1120, T Markham 1053, L K Brundle 1038, W J Worraker 844, R C Dryden 646, I A Middlemist 637, N M Bone 598, G M Hurst 464, S Koushiappas 458, W Albrecht 455, Tosh Lubek 335, B R M Munden 334, A Smeaton 312, T Brelstaff 296, R Livingstone 294, S Godwin 292, James Fraser 283, M D Overbeek 262, M Clarke 248, D Gavine 173, A F Jones 161, M J Nicholls 159, H G Duncan 148, M A Adamson 132, S G Ridley 115, J Thorpe 102, N Taylor 100, Tom Cragg 85, J J Howarth 81, J S Day 79, K Xylaris 78, M Barrett 78, P Williams 62, C Washington 58, S Beaumont 56, D S Conner 53, Roy Mitchell 51, R W Fleet 44, S Dreves 37, C Panayiotides 36, C P Jones 28, P J Wheeler 27, R D Pickard 25, J D Shanklin 25, L Green 25, E Harries-Harris 21, R W Middleton 20, J Phillips 20, B A L Green 19, C Henshaw 17, A Boattini 16, T Cooper 15, G Stephanopoulos 15, S Elliott 14, B Menzies 14, M Gill 13, L Dahlmark 9, B Tregaskis 6, R Winnett 6, Martin Lehky 5, M Collins 5, P A Moore 4, D H Roberts 4, A Pearce 4, O Hull 3, R Jones 3, L Williamson 2.