condition mean min max ZT0-3 0.11333217500000001 0.08627585 0.1403885 ZT4-7 0.341947 0.341947 0.341947 ZT8-11 0.4339265 0.4339265 0.4339265 ZT12-15 0 0 0 ZT16-19 0.5369985 0.5369985 0.5369985 ZT20-23 0.3977275 0.3977275 0.3977275