condition mean min max ZT0-3 3853.95 3853.95 3853.95 ZT4-7 4766.2 4766.2 4766.2 ZT8-11 5142.85 5142.85 5142.85 ZT12-15 4727.65 4727.65 4727.65 ZT16-19 4184.9 4184.9 4184.9 ZT20-23 3601.15 3601.15 3601.15