condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.01950885 0.01950885 0.01950885 ZT8-11 0.02014195 0.02014195 0.02014195 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0