condition mean min max ZT0-3 474.4 474.4 474.4 ZT4-7 541.6 541.6 541.6 ZT8-11 599.0 599.0 599.0 ZT12-15 606.7 606.7 606.7 ZT16-19 591.6500000000001 591.6500000000001 591.6500000000001 ZT20-23 560.8 560.8 560.8