condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.05519 0.0 0.11038 8 h after light 0.0 0.0 0.0 4 h after dark 0.0551935 0.0 0.110387 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0