condition mean min max 4 h after light 1.0095115 0.941643 1.07738 8 h after light 0.6099485 0.547905 0.671992 12 h after light 0.5468895 0.395888 0.697891 4 h after dark 0.6951773333333333 0.538859 0.792121 8 h after dark 0.865717 0.783221 0.968461 12 h after dark 1.3196533333333333 1.16273 1.41486