condition mean min max ZT0-3 544.8 544.8 544.8 ZT4-7 718.6 718.6 718.6 ZT8-11 669.9000000000001 669.9000000000001 669.9000000000001 ZT12-15 626.2 626.2 626.2 ZT16-19 560.65 560.65 560.65 ZT20-23 592.15 592.15 592.15