condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0194028 0.0194028 0.0194028 ZT12-15 0.007574725 0.0 0.01514945 ZT16-19 0.0245535 0.0 0.049107 ZT20-23 0 0 0