condition mean min max ZT0-3 721.0185 721.0185 721.0185 ZT4-7 355.171 355.171 355.171 ZT8-11 432.8805 432.8805 432.8805 ZT12-15 549.792 549.792 549.792 ZT16-19 1248.6350000000002 1248.6350000000002 1248.6350000000002 ZT20-23 1092.805 1092.805 1092.805