condition mean min max ZT0-3 123.827098 123.827098 123.827098 ZT4-7 105.46283650000001 105.46283650000001 105.46283650000001 ZT8-11 114.47022849999999 114.47022849999999 114.47022849999999 ZT12-15 117.81465299999999 117.81465299999999 117.81465299999999 ZT16-19 153.833685 153.833685 153.833685 ZT20-23 179.86267650000002 179.86267650000002 179.86267650000002