condition mean min max ZT0-3 0.28978004749999997 0.284874064 0.29468603099999996 ZT4-7 0.341782263 0.18849837433333333 0.4950661516666666 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.190557978 0.0 0.381115956 ZT20-23 0.0 0.0 0.0