condition mean min max 0 h after light 8.09314 7.69568 8.4906 4 h after light 9.603295 7.37469 11.8319 8 h after light 7.444435 7.28873 7.60014 4 h after dark 7.8095300000000005 7.14759 8.47147 8 h after dark 9.845915000000002 9.63733 10.0545 12 h after dark 9.122679999999999 8.37826 9.8671