condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.01926375 0.01926375 0.01926375 ZT8-11 0.012418583333333332 0.012418583333333332 0.012418583333333332 ZT12-15 0.012224249999999999 0.012224249999999999 0.012224249999999999 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0