condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0317768 0.0 0.0635536 12 h after light 0.0660266 0.0618071 0.0702461 2 h after dark 0.03167775 0.0 0.0633555 4 h after dark 0.0 0.0 0.0 8 h after dark 0.03337515 0.0 0.0667503 12 h after dark 0.0 0.0 0.0