condition mean min max ZT0-3 0.5167623333333333 0.39201600000000003 0.6875545000000001 ZT4-7 0.40117549999999996 0.40117549999999996 0.40117549999999996 ZT8-11 0.5070209999999999 0.5070209999999999 0.5070209999999999 ZT12-15 0.5194190000000001 0.4351785 0.6036595 ZT16-19 0.452266 0.452266 0.452266 ZT20-23 0.5473945 0.5473945 0.5473945