condition mean min max 0 h after light 12.9453 11.072 14.8186 2 h after light 10.77135 10.7508 10.7919 4 h after light 6.256425 5.47298 7.03987 8 h after light 6.780695 4.01751 9.54388 12 h after light 16.183 15.6284 16.7376 2 h after dark 14.40095 13.3981 15.4038 4 h after dark 9.53234 8.91598 10.1487 8 h after dark 20.5201 18.8259 22.2143 12 h after dark 14.0808 13.4159 14.7457