condition mean min max 4 h after light 1.4222450000000002 1.16362 1.68087 8 h after light 2.511885 2.0784 2.94537 12 h after light 3.22059 2.90099 3.54019 4 h after dark 3.510825 3.00892 4.01273 8 h after dark 3.18032 2.98915 3.37149 12 h after dark 2.819445 2.80216 2.83673