condition mean min max ZT0-3 13.339 5.86695 20.81105 ZT4-7 14.111550000000001 14.111550000000001 14.111550000000001 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 20.6131 20.6131 20.6131 ZT20-23 17.38325 17.38325 17.38325