condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.03376345 0.03376345 0.03376345 ZT12-15 0.0 0.0 0.0 ZT16-19 0.01802105 0.01802105 0.01802105 ZT20-23 0.00903085 0.00903085 0.00903085