condition mean min max 3 h after light 6.535279999999999 5.72709 7.56957 6 h after light 10.022993333333334 8.16452 12.4766 9 h after light 13.45 12.3998 14.2694 12 h after light 17.746566666666666 17.2161 18.7105 3 h after dark 20.754266666666666 16.8513 23.9041 6 h after dark 18.3429 17.5953 19.6305 9 h after dark 12.4071 9.9104 14.4898 12 h after dark 5.71206 3.64988 7.79997