condition mean min max ZT0-3 1296.9 1296.9 1296.9 ZT4-7 869.5 869.5 869.5 ZT8-11 1092.1 1092.1 1092.1 ZT12-15 897.8 897.8 897.8 ZT16-19 1023.3499999999999 1023.3499999999999 1023.3499999999999 ZT20-23 1425.8000000000002 1425.8000000000002 1425.8000000000002