condition mean min max ZT0-3 0.71780075 0.4726075 0.962994 ZT4-7 0.552172 0.552172 0.552172 ZT8-11 0.6507235 0.6507235 0.6507235 ZT12-15 0 0 0 ZT16-19 0.980854 0.980854 0.980854 ZT20-23 1.699455 1.699455 1.699455