condition mean min max ZT0-3 51.146100000000004 40.59035 61.70185000000001 ZT4-7 12.0598 12.0598 12.0598 ZT8-11 2.87525 2.87525 2.87525 ZT12-15 0 0 0 ZT16-19 13.540195 13.540195 13.540195 ZT20-23 18.7543 18.7543 18.7543