condition mean min max 4 h after light 0.2529705 0.251987 0.253954 8 h after light 0.3501945 0.321489 0.3789 12 h after light 0.5097835 0.249993 0.769574 4 h after dark 0.620712 0.417777 0.823647 8 h after dark 0.339067 0.327294 0.35084 12 h after dark 0.3485705 0.297993 0.399148