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 0.02669161975 0.0 0.0533832395 ZT16-19 0.06459015 0.0 0.1291803 ZT20-23 0.0 0.0 0.0