condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.962455 0.0 1.92491 12 h after light 0.0 0.0 0.0 4 h after dark 2.084525 0.0 4.16905 8 h after dark 2.059455 0.0 4.11891 12 h after dark 0.0 0.0 0.0