condition mean min max ZT0-3 1.5384395 1.448379 1.6285 ZT4-7 2.80191 2.80191 2.80191 ZT8-11 4.671265 4.671265 4.671265 ZT12-15 0 0 0 ZT16-19 4.4779599999999995 4.4779599999999995 4.4779599999999995 ZT20-23 2.24976 2.24976 2.24976