condition mean min max ZT0-3 142.90050000000002 133.906 151.895 ZT4-7 48.5404 48.5404 48.5404 ZT8-11 14.00155 14.00155 14.00155 ZT12-15 0 0 0 ZT16-19 87.58189999999999 87.58189999999999 87.58189999999999 ZT20-23 177.3015 177.3015 177.3015