condition mean min max 4 h after light 11.135975 10.314704 11.957246 8 h after light 9.9522025 9.589701 10.314704 12 h after light 10.2495315 10.184359 10.314704 4 h after dark 9.777694 9.277365 10.278023 8 h after dark 11.183155500000002 9.47798 12.888331 12 h after dark 9.560304 9.560304 9.560304