condition mean min max ZT0-3 21.597299999999997 20.8843 22.310299999999998 ZT4-7 30.896900000000002 30.896900000000002 30.896900000000002 ZT8-11 26.7815 26.7815 26.7815 ZT12-15 0 0 0 ZT16-19 37.742450000000005 37.742450000000005 37.742450000000005 ZT20-23 27.515900000000002 27.515900000000002 27.515900000000002