condition mean min max 0 h after light 0.371651 0.0 0.743302 2 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.54051 0.0 1.08102 2 h after dark 0.0 0.0 0.0 4 h after dark 0.4543915 0.0 0.908783 8 h after dark 0.0 0.0 0.0 12 h after dark 0.30651 0.0 0.61302