condition mean min max ZT0-3 54.56121666666667 29.201949999999997 77.69005 ZT4-7 34.74395 34.74395 34.74395 ZT8-11 28.156950000000002 28.156950000000002 28.156950000000002 ZT12-15 115.1757 112.039 118.3124 ZT16-19 114.393 114.393 114.393 ZT20-23 115.56 115.56 115.56