condition mean min max ZT0-3 78.26165 78.26165 78.26165 ZT4-7 49.0975 49.0975 49.0975 ZT8-11 51.09295 51.09295 51.09295 ZT12-15 70.14699999999999 70.14699999999999 70.14699999999999 ZT16-19 88.72909999999999 88.72909999999999 88.72909999999999 ZT20-23 86.86765 86.86765 86.86765