condition mean min max 0 h after light 7.11858 7.08178 7.15538 4 h after light 5.894920000000001 5.7975 5.99234 8 h after light 5.76835 5.35311 6.18359 4 h after dark 6.894295 6.18081 7.60778 8 h after dark 7.354405 7.21697 7.49184 12 h after dark 6.38294 6.11264 6.65324