condition mean min max ZT0-3 1084.2455 1047.816 1120.675 ZT4-7 639.172 639.172 639.172 ZT8-11 638.377 638.377 638.377 ZT12-15 0 0 0 ZT16-19 622.6510000000001 622.6510000000001 622.6510000000001 ZT20-23 248.4 248.4 248.4