condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.121643 0.0 0.243286 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0 4 h after dark 0.2117355 0.207725 0.215746 8 h after dark 0.356021 0.243076 0.468966 12 h after dark 0.0 0.0 0.0