condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.12562573566666668 0.0 0.25125147133333336 ZT12-15 0.05898934916666667 0.0 0.11797869833333334 ZT16-19 0.0 0.0 0.0 ZT20-23 0.047219920500000005 0.0 0.09443984100000001