condition mean min max 3 h after light 16.2663 14.2496 17.7575 6 h after light 16.328733333333332 14.8414 17.1232 9 h after light 19.8642 18.2229 22.5777 12 h after light 21.932025 19.8569 24.0116 3 h after dark 32.7139 29.8289 34.9874 6 h after dark 32.91406666666667 30.0949 34.5933 9 h after dark 25.742466666666665 19.3462 30.5308 12 h after dark 21.3964 20.6623 22.1305