condition mean min max 0 h after light 1.88876 1.68478 2.09274 2 h after light 1.52718 1.23676 1.8176 4 h after light 1.52625 1.33388 1.71862 8 h after light 1.469455 1.46666 1.47225 12 h after light 3.403885 3.10941 3.69836 2 h after dark 3.27513 3.06874 3.48152 4 h after dark 3.206405 3.05174 3.36107 8 h after dark 2.763175 2.31945 3.2069 12 h after dark 2.67661 2.55928 2.79394