condition mean min max ZT0-3 134.94596 134.94596 134.94596 ZT4-7 173.749752 173.749752 173.749752 ZT8-11 243.18573700000002 243.18573700000002 243.18573700000002 ZT12-15 212.144138 212.144138 212.144138 ZT16-19 200.976824 200.976824 200.976824 ZT20-23 180.638145 180.638145 180.638145