condition mean min max 0 h after light 2.66749 2.23261 3.10237 4 h after light 1.050986 0.781082 1.32089 8 h after light 0.611823 0.43987 0.783776 4 h after dark 0.957406 0.636592 1.27822 8 h after dark 1.67314 1.50209 1.84419 12 h after dark 1.993475 1.82926 2.15769