condition mean min max ZT0-3 105.62480000000001 88.68260000000001 122.56700000000001 ZT4-7 36.35125 36.35125 36.35125 ZT8-11 25.49615 25.49615 25.49615 ZT12-15 0 0 0 ZT16-19 44.5185 44.5185 44.5185 ZT20-23 59.96955 59.96955 59.96955