condition mean min max ZT0-3 606.95 606.95 606.95 ZT4-7 548.0 548.0 548.0 ZT8-11 485.15 485.15 485.15 ZT12-15 669.15 669.15 669.15 ZT16-19 660.6 660.6 660.6 ZT20-23 605.2 605.2 605.2