condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0107993 0.0107993 0.0107993 ZT12-15 0.009848 0.009848 0.009848 ZT16-19 0.0 0.0 0.0 ZT20-23 0.004313525 0.004313525 0.004313525