condition mean min max ZT0-3 2017.15 2017.15 2017.15 ZT4-7 2490.5 2490.5 2490.5 ZT8-11 3573.3999999999996 3573.3999999999996 3573.3999999999996 ZT12-15 3554.1499999999996 3554.1499999999996 3554.1499999999996 ZT16-19 3903.5499999999997 3903.5499999999997 3903.5499999999997 ZT20-23 3037.3999999999996 3037.3999999999996 3037.3999999999996