condition mean min max ZT0-3 0.09860078333333333 0.0627015 0.1312995 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.015743575 0.0 0.03148715 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0