condition mean min max ZT0-3 0.184554 0.0 0.4177715 ZT4-7 0.0 0.0 0.0 ZT8-11 0.14009 0.14009 0.14009 ZT12-15 0.28978325000000005 0.13624 0.44332650000000007 ZT16-19 0.0 0.0 0.0 ZT20-23 0.60486 0.60486 0.60486