condition mean min max ZT0-3 0.019148833333333334 0.0 0.0574465 ZT4-7 0.0 0.0 0.0 ZT8-11 0.11558 0.11558 0.11558 ZT12-15 0.028805 0.0 0.05761 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0606965 0.0606965 0.0606965