condition mean min max ZT0-3 107.55000000000001 107.55000000000001 107.55000000000001 ZT4-7 58.7 58.7 58.7 ZT8-11 70.65 70.65 70.65 ZT12-15 83.25 83.25 83.25 ZT16-19 186.2 186.2 186.2 ZT20-23 151.0 151.0 151.0