condition mean min max 0 h after light 5.13012 5.04898 5.21126 4 h after light 2.03407 1.88561 2.18253 8 h after light 2.19201 1.89212 2.4919 4 h after dark 2.25917 1.87831 2.64003 8 h after dark 2.80962 2.37951 3.23973 12 h after dark 3.406245 2.83985 3.97264