condition mean min max ZT0-3 85.6 85.6 85.6 ZT4-7 104.5 104.5 104.5 ZT8-11 50.400000000000006 50.400000000000006 50.400000000000006 ZT12-15 81.8 81.8 81.8 ZT16-19 107.14999999999999 107.14999999999999 107.14999999999999 ZT20-23 129.4 129.4 129.4