condition mean min max 0 h after light 0.8927309999999999 0.891935 0.893527 4 h after light 0.3920915 0.329775 0.454408 8 h after light 0.5027445 0.453968 0.551521 4 h after dark 1.152557 0.875994 1.42912 8 h after dark 0.8821475 0.878446 0.885849 12 h after dark 0.716448 0.653501 0.779395