condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.048572833333333336 0.0 0.09714566666666667 ZT16-19 0.10154200000000001 0.10154200000000001 0.10154200000000001 ZT20-23 0.0 0.0 0.0