condition mean min max ZT0-3 3731.05 3731.05 3731.05 ZT4-7 4068.0 4068.0 4068.0 ZT8-11 3984.05 3984.05 3984.05 ZT12-15 4105.95 4105.95 4105.95 ZT16-19 3875.8 3875.8 3875.8 ZT20-23 3480.3999999999996 3480.3999999999996 3480.3999999999996