FIELD GM CALCULATOR 1.21.xls Copyright 2009 T. Allnutt, Food and Environment Research Agency, Sand Hutton, York, UK Please note this is a beta version of these programs and a work in progress. Current and previous known issues. 1.2 Upper percentile values calculated will sometimes not be correct when non-GM field sizes is less than 1 Ha. NOW FIXED. 1.21 Progress of calculation shown in metres. Minor alterations to guidance notes. 1.21 'Calculation finished' box added 1.21 Reccommend to multiply target GM by two for silage maize, prior to calculation rather than divide final result for 'CALC DIST' sheet. This is because only effect of pollination is altered by silage (~%50 grain).