condition mean min max 0 h after light 2.39794 2.05824 2.73764 4 h after light 4.31239 3.70365 4.92113 8 h after light 1.8052745 0.955959 2.65459 4 h after dark 1.74104 1.49785 1.98423 8 h after dark 2.25456 1.99865 2.51047 12 h after dark 1.415591 0.917422 1.91376