condition mean min max 4 h after light 0.109971 0.0 0.219942 8 h after light 0.030023 0.0 0.060046 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0