condition mean min max ZT0-3 41.900000000000006 41.900000000000006 41.900000000000006 ZT4-7 75.7 75.7 75.7 ZT8-11 88.30000000000001 88.30000000000001 88.30000000000001 ZT12-15 151.3 151.3 151.3 ZT16-19 134.25 134.25 134.25 ZT20-23 97.25 97.25 97.25