condition mean min max 2 h after light 16.124533333333332 10.3234 23.8189 6 h after light 20.44045 9.5262 31.0886 10 h after light 18.606116666666665 10.0789 26.7456 14 h after light 17.40044 9.56574 20.3268 18 h after light 17.11303 3.29758 24.7469 2 h after dark 15.885916666666667 10.8227 20.35