condition mean min max ZT0-3 141.1965 129.236 153.15699999999998 ZT4-7 99.83715 99.83715 99.83715 ZT8-11 177.0995 177.0995 177.0995 ZT12-15 0 0 0 ZT16-19 191.58999999999997 191.58999999999997 191.58999999999997 ZT20-23 170.375 170.375 170.375