condition mean min max ZT0-3 55.229949999999995 46.188199999999995 62.977549999999994 ZT4-7 36.6177 36.6177 36.6177 ZT8-11 42.5941 42.5941 42.5941 ZT12-15 58.232275 51.31115 65.1534 ZT16-19 60.705349999999996 60.705349999999996 60.705349999999996 ZT20-23 71.7986 71.7986 71.7986