condition mean min max ZT0-3 0.95852275 0.669933 1.2471125 ZT4-7 0.7254905 0.7254905 0.7254905 ZT8-11 1.905415 1.905415 1.905415 ZT12-15 0 0 0 ZT16-19 1.976175 1.976175 1.976175 ZT20-23 1.44909 1.44909 1.44909