condition mean min max ZT0-3 0.2500923333333333 0.0 0.394543 ZT4-7 0.6974 0.6974 0.6974 ZT8-11 0.0 0.0 0.0 ZT12-15 0.97138925 0.81213 1.1306485 ZT16-19 1.064515 1.064515 1.064515 ZT20-23 0.4001185 0.4001185 0.4001185