condition mean min max ZT0-3 0.00834245 0.0 0.02502735 ZT4-7 0.04866785 0.04866785 0.04866785 ZT8-11 0.0 0.0 0.0 ZT12-15 0.013914125 0.0 0.02782825 ZT16-19 0.0468627 0.0468627 0.0468627 ZT20-23 0.0 0.0 0.0