condition mean min max ZT0-3 0.6663079999999999 0.5973425 0.7352734999999999 ZT4-7 1.0444985 1.0444985 1.0444985 ZT8-11 1.796955 1.796955 1.796955 ZT12-15 0 0 0 ZT16-19 2.937665 2.937665 2.937665 ZT20-23 2.654935 2.654935 2.654935