condition mean min max ZT0-3 57.339628 57.339628 57.339628 ZT4-7 78.39237800000001 78.39237800000001 78.39237800000001 ZT8-11 85.095581 85.095581 85.095581 ZT12-15 78.343343 78.343343 78.343343 ZT16-19 77.228023 77.228023 77.228023 ZT20-23 70.04425599999999 70.04425599999999 70.04425599999999