condition mean min max 4 h after light 2552.5345065 2040.373426 3064.695587 8 h after light 4736.543285 4247.30898 5225.77759 12 h after light 4495.507485 4211.090606 4779.924364 4 h after dark 4829.880195 4800.736013 4859.024377 8 h after dark 3485.3849665 2480.32332 4490.446613 12 h after dark 2504.826299 2504.826299 2504.826299