condition mean min max ZT0-3 6822.15 6822.15 6822.15 ZT4-7 5612.2 5612.2 5612.2 ZT8-11 5371.65 5371.65 5371.65 ZT12-15 8271.25 8271.25 8271.25 ZT16-19 9573.05 9573.05 9573.05 ZT20-23 7315.099999999999 7315.099999999999 7315.099999999999