condition mean min max ZT0-3 91.82939999999999 86.5101 97.1487 ZT4-7 62.44865 62.44865 62.44865 ZT8-11 46.48495 46.48495 46.48495 ZT12-15 0 0 0 ZT16-19 45.800399999999996 45.800399999999996 45.800399999999996 ZT20-23 70.51525000000001 70.51525000000001 70.51525000000001