condition mean min max ZT0-3 0.4183165 0.4183165 0.4183165 ZT4-7 0.13394974999999998 0.13394974999999998 0.13394974999999998 ZT8-11 0.04243565 0.04243565 0.04243565 ZT12-15 0.222673 0.222673 0.222673 ZT16-19 0.5950305 0.5950305 0.5950305 ZT20-23 0.5940285000000001 0.5940285000000001 0.5940285000000001