condition mean min max 0 h after light 0.152871 0.0 0.305742 2 h after light 0.0797145 0.0 0.159429 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.071311 0.0 0.142622 2 h after dark 0.0730975 0.0 0.146195 4 h after dark 0.0 0.0 0.0 8 h after dark 0.079861 0.0 0.159722 12 h after dark 0.0 0.0 0.0