condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0139183 0.0 0.0278366 12 h after light 0.0 0.0 0.0 4 h after dark 0.02234765 0.0221873 0.022508 8 h after dark 0.049642399999999996 0.0111187 0.0881661 12 h after dark 0.02016245 0.0184323 0.0218926