condition mean min max 4 h after light 4.61656 4.578 4.63772 8 h after light 4.5772 4.38776 4.76676 12 h after light 4.608743333333333 4.44635 4.88178 4 h after dark 4.582813333333333 4.4009 4.7593 8 h after dark 4.545623333333333 4.36765 4.7064 12 h after dark 4.57965 4.4725 4.7775