condition mean min max ZT0-3 58.475449999999995 58.475449999999995 58.475449999999995 ZT4-7 26.551650000000002 26.551650000000002 26.551650000000002 ZT8-11 18.299500000000002 18.299500000000002 18.299500000000002 ZT12-15 24.20055 24.20055 24.20055 ZT16-19 63.09740000000001 63.09740000000001 63.09740000000001 ZT20-23 64.18350000000001 64.18350000000001 64.18350000000001