condition mean min max ZT0-3 0.2333945 0.2333945 0.2333945 ZT4-7 0.07653974999999999 0.07653974999999999 0.07653974999999999 ZT8-11 0.3076985 0.3076985 0.3076985 ZT12-15 0.3859345 0.3859345 0.3859345 ZT16-19 0.351734 0.351734 0.351734 ZT20-23 0.1412235 0.1412235 0.1412235