As the title implies, what was the average Correlated Color Temperature (CCT) of the vast majority of classic 4-door sedans, in the United States, back in the 1970s? What was the most common color temperature value (in Kelvin)?
To simplify matters, for reference, I've included a link containing a screenshot of a car, which shows up in a classic 1970s TV series, as, from what I've seen, most of the cars that appear in 1970s movies had the same CCT as the one in my screenshot (take a sharp look at the headlights), notice that "glacier white" color (what's the CCT value?).
I'm interested in both the average CCT low-beam values in the '70s and the high-beam values, as well.
Note: I was born in the 1980s, so, that's why I'm asking this question.
Here's the link to it: https://imgur.com/a/mRDZdXd
Any help would be greatly appreciated.