condition mean min max ZT0-3 119.55 119.55 119.55 ZT4-7 52.4 52.4 52.4 ZT8-11 104.80000000000001 104.80000000000001 104.80000000000001 ZT12-15 112.85 112.85 112.85 ZT16-19 132.9 132.9 132.9 ZT20-23 161.60000000000002 161.60000000000002 161.60000000000002