condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0288269 0.0 0.0864807 9 h after light 0.0293445 0.0 0.0880335 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0247614 0.0 0.0742842 12 h after dark 0.0 0.0 0.0