condition mean min max ZT0-3 0.015594499999999999 0.0 0.0467835 ZT4-7 0.02288865 0.02288865 0.02288865 ZT8-11 0.1441385 0.1441385 0.1441385 ZT12-15 0.07333447500000001 0.070356 0.07631295 ZT16-19 0.0 0.0 0.0 ZT20-23 0.02626365 0.02626365 0.02626365