condition mean min max ZT0-3 39.11715585500001 37.28197241 40.952339300000006 ZT4-7 58.293990255 42.139356765 74.44862374499999 ZT8-11 88.46955726499999 87.98845465 88.95065988 ZT12-15 61.536879605 51.09954336 71.97421585000001 ZT16-19 58.8623496675 58.011902379999995 59.712796955 ZT20-23 61.9303396675 61.088106885 62.77257245