condition mean min max ZT0-3 107.3297 105.7175 108.9419 ZT4-7 90.2313 90.2313 90.2313 ZT8-11 38.6706 38.6706 38.6706 ZT12-15 0 0 0 ZT16-19 38.64515 38.64515 38.64515 ZT20-23 86.1737 86.1737 86.1737