condition mean min max ZT0-3 147.13799999999998 141.0545 153.2215 ZT4-7 173.4635 173.4635 173.4635 ZT8-11 219.452 219.452 219.452 ZT12-15 0 0 0 ZT16-19 191.56 191.56 191.56 ZT20-23 167.945 167.945 167.945