condition mean min max ZT0-3 30.856033562500002 17.93545302 43.776614105 ZT4-7 51.337828895 50.05814294 52.617514850000006 ZT8-11 28.96885821325 22.7987959665 35.13892046 ZT12-15 15.4243175975 12.921444475 17.92719072 ZT16-19 31.16738177 29.98267749 32.35208605 ZT20-23 42.880627162500005 40.99192681 44.769327515