condition mean min max 4 h after light 4082.1 4082.1 4082.1 8 h after light 4337.95 4008.7 4667.2 12 h after light 4557.0 4283.2 4830.8 4 h after dark 4899.45 4793.9 5005.0 8 h after dark 5386.4 5203.5 5569.3 12 h after dark 5568.45 5154.0 5982.9