condition mean min max ZT0-3 0.9490855 0.9490855 0.9490855 ZT4-7 0.295381 0.295381 0.295381 ZT8-11 0.265835 0.265835 0.265835 ZT12-15 0.5633140000000001 0.5633140000000001 0.5633140000000001 ZT16-19 2.591385 2.591385 2.591385 ZT20-23 1.680665 1.680665 1.680665