condition mean min max ZT0-3 2697.7 2697.7 2697.7 ZT4-7 2862.0 2862.0 2862.0 ZT8-11 3267.15 3267.15 3267.15 ZT12-15 3777.8 3777.8 3777.8 ZT16-19 3619.35 3619.35 3619.35 ZT20-23 3133.5 3133.5 3133.5