condition mean min max ZT0-3 121.53975 117.6635 125.416 ZT4-7 115.67099999999999 115.67099999999999 115.67099999999999 ZT8-11 97.78485 97.78485 97.78485 ZT12-15 0 0 0 ZT16-19 107.01509999999999 107.01509999999999 107.01509999999999 ZT20-23 116.69149999999999 116.69149999999999 116.69149999999999