condition mean min max ZT0-3 27.396475 26.712249999999997 28.0807 ZT4-7 34.80775 34.80775 34.80775 ZT8-11 47.751149999999996 47.751149999999996 47.751149999999996 ZT12-15 0 0 0 ZT16-19 48.8438 48.8438 48.8438 ZT20-23 32.9404 32.9404 32.9404