condition mean min max ZT0-3 1023.85 1023.85 1023.85 ZT4-7 1732.2 1732.2 1732.2 ZT8-11 2272.9 2272.9 2272.9 ZT12-15 4217.7 4217.7 4217.7 ZT16-19 2674.7 2674.7 2674.7 ZT20-23 1543.6 1543.6 1543.6