condition mean min max ZT0-3 153.6635 153.6635 153.6635 ZT4-7 133.503 133.503 133.503 ZT8-11 136.35399999999998 136.35399999999998 136.35399999999998 ZT12-15 134.013 134.013 134.013 ZT16-19 126.0245 126.0245 126.0245 ZT20-23 168.49099999999999 168.49099999999999 168.49099999999999