Doctor, Doctor. The National Weather Service data for Boulder for the entire month of December is posted in the evidence section. It says a trace of snow fell during the night. Doesn't say when. If there was frost on the ground, as you say the police say then why is it not shown on the ground in the photos taken early on the 26th. before the tempersture rose above freezing?

When did the police observe this frost? At 6:15 am as officer R. walked the house perimeter? Does this mean they are certain the crime wasn't committed before the frost formed? And when was it formed? Frost only forms under certain conditions, which are somewhat different from those when snow is formed.