condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.01302785 0.0 0.0260557 12 h after light 0.0158711 0.0 0.0317422 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0104481 0.0 0.0208962 12 h after dark 0.01730215 0.0 0.0346043