condition mean min max 4 h after light 1.9781849999999999 1.81837 2.138 8 h after light 2.38375 2.3371 2.4304 12 h after light 3.02488 2.75359 3.29617 4 h after dark 3.648385 3.30505 3.99172 8 h after dark 3.7193899999999998 3.70655 3.73223 12 h after dark 2.8737 2.57753 3.16987