condition mean min max 3 h after light 1.81782 1.46764 2.15015 6 h after light 2.41165 1.6075 2.91055 9 h after light 2.48757 1.6203 3.77222 12 h after light 2.8151775 2.14195 3.83894 3 h after dark 2.88091 2.40655 3.20889 6 h after dark 2.9487266666666665 2.23804 3.85328 9 h after dark 2.4399 1.74221 3.24376 12 h after dark 2.29296 1.93842 2.6475