condition mean min max 4 h after light 4.43371 4.42727 4.441669999999999 8 h after light 4.454326666666667 4.41258 4.53346 12 h after light 4.4115166666666665 4.39772 4.42877 4 h after dark 4.3402199999999995 4.299169999999999 4.37314 8 h after dark 4.435276666666667 4.36937 4.5513900000000005 12 h after dark 4.388183333333333 4.29038 4.45231