condition mean min max 4 h after light 15.355184 15.169272 15.541096 8 h after light 12.243069 12.064417 12.421721 12 h after light 10.990202 10.180385 11.800019 4 h after dark 14.822644 12.990998 16.65429 8 h after dark 12.5208025 11.671713 13.369892 12 h after dark 14.477776 14.477776 14.477776