condition mean min max 4 h after light 0.146839 0.112413 0.181265 8 h after light 0.0827734 0.0737587 0.0917881 12 h after light 0.37975899999999996 0.224204 0.535314 4 h after dark 0.828296 0.735554 0.921038 8 h after dark 0.581718 0.579402 0.584034 12 h after dark 0.319019 0.309321 0.328717