condition mean min max 4 h after light 4.084825 3.67037 4.49928 8 h after light 4.667205 4.48722 4.84719 12 h after light 4.911275 4.69024 5.13231 4 h after dark 5.20916 4.80269 5.94597 8 h after dark 2.7625366666666666 2.12551 3.32445 12 h after dark 2.652241666666667 0.842525 4.17063