condition mean min max ZT0-3 28.800116666666668 22.6089 39.237300000000005 ZT4-7 31.9996 31.9996 31.9996 ZT8-11 26.0749 26.0749 26.0749 ZT12-15 43.813975 43.500299999999996 44.12765 ZT16-19 33.37605 33.37605 33.37605 ZT20-23 35.754400000000004 35.754400000000004 35.754400000000004