condition mean min max 2 h after light 7.445673333333334 6.98394 7.90423 6 h after light 7.526896666666667 7.02128 7.86289 10 h after light 7.99299 7.71565 8.32888 2 h after dark 7.13585 6.73163 7.89493 6 h after dark 8.51928 7.82367 9.5287 10 h after dark 8.06583 7.48824 8.94425