condition mean min max ZT0-3 119.943377 119.943377 119.943377 ZT4-7 84.4389045 84.4389045 84.4389045 ZT8-11 106.2558105 106.2558105 106.2558105 ZT12-15 95.966002 95.966002 95.966002 ZT16-19 129.199022 129.199022 129.199022 ZT20-23 107.88747000000001 107.88747000000001 107.88747000000001