condition mean min max ZT0-3 101.235925 67.18934999999999 135.2825 ZT4-7 4.25845 4.25845 4.25845 ZT8-11 0.41613599999999995 0.41613599999999995 0.41613599999999995 ZT12-15 0 0 0 ZT16-19 0.0816755 0.0816755 0.0816755 ZT20-23 4.52337 4.52337 4.52337