condition mean min max ZT0-3 0.200184 0.200184 0.200184 ZT4-7 0.36625949999999996 0.36625949999999996 0.36625949999999996 ZT8-11 0.386176 0.386176 0.386176 ZT12-15 0.3110695 0.3110695 0.3110695 ZT16-19 1.4688433333333333 1.4688433333333333 1.4688433333333333 ZT20-23 0.34003999999999995 0.34003999999999995 0.34003999999999995