condition mean min max ZT0-3 709.68875 656.298 763.0795 ZT4-7 462.9155 462.9155 462.9155 ZT8-11 687.8305 687.8305 687.8305 ZT12-15 0 0 0 ZT16-19 669.4680000000001 669.4680000000001 669.4680000000001 ZT20-23 538.8985 538.8985 538.8985