condition mean min max ZT0-3 0.4854575 0.4027815 0.5681335 ZT4-7 0.6762459999999999 0.6762459999999999 0.6762459999999999 ZT8-11 0.5129605 0.5129605 0.5129605 ZT12-15 0 0 0 ZT16-19 0.3844175 0.3844175 0.3844175 ZT20-23 1.0176245000000002 1.0176245000000002 1.0176245000000002