condition mean min max 0 h after light 3.37181 2.89851 3.84511 4 h after light 3.05368 2.96529 3.14207 8 h after light 2.613785 2.40271 2.82486 4 h after dark 3.5042400000000002 2.80425 4.20423 8 h after dark 3.219535 3.14955 3.28952 12 h after dark 3.51505 3.45975 3.57035