condition mean min max ZT0-3 0.02835045 0.02835045 0.02835045 ZT4-7 0.0541075 0.0541075 0.0541075 ZT8-11 0.034183149999999995 0.034183149999999995 0.034183149999999995 ZT12-15 0.02367265 0.02367265 0.02367265 ZT16-19 0.0158243 0.0158243 0.0158243 ZT20-23 0.0233133 0.0233133 0.0233133