condition mean min max ZT0-3 2656.3 2656.3 2656.3 ZT4-7 3120.2 3120.2 3120.2 ZT8-11 3041.9 3041.9 3041.9 ZT12-15 2829.65 2829.65 2829.65 ZT16-19 2200.5 2200.5 2200.5 ZT20-23 2240.7 2240.7 2240.7