condition mean min max ZT0-3 0.38826549999999993 0.1086185 0.6679124999999999 ZT4-7 0.0 0.0 0.0 ZT8-11 0.220004 0.220004 0.220004 ZT12-15 0 0 0 ZT16-19 0.327598 0.327598 0.327598 ZT20-23 0.3303605 0.3303605 0.3303605