condition mean min max ZT0-3 43.817031 43.817031 43.817031 ZT4-7 36.207834000000005 36.207834000000005 36.207834000000005 ZT8-11 33.8726655 33.8726655 33.8726655 ZT12-15 183.0347075 183.0347075 183.0347075 ZT16-19 29.859386999999998 29.859386999999998 29.859386999999998 ZT20-23 255.14132999999998 255.14132999999998 255.14132999999998