condition mean min max ZT0-3 998.654212 998.654212 998.654212 ZT4-7 907.327893 907.327893 907.327893 ZT8-11 902.8186965 902.8186965 902.8186965 ZT12-15 1108.9652325 1108.9652325 1108.9652325 ZT16-19 1040.1304165000001 1040.1304165000001 1040.1304165000001 ZT20-23 598.9830555 598.9830555 598.9830555