So, are the averages that you had listed in your above chart meant to be for the whole month? taking an average what the price would have been for each of the days of the month?  Or is it calculated in a different way?  I see that the CSV download (the one that I did) had given the BTC price each hour for the past 30 days (something like that or maybe it was 31 days?).. I suppose that you could average all of those prices that are in that hourly chart and then arrive at an approximation of monthly average that is close, but does not quite account for the trade volume variance.

From where are you getting the monthly traded volume data?  How is it calculated?

I know that you can get daily traded volume BTC price on Bitstamp from:

https://bitcoincharts.com/charts/bitstampUSD#rg60ztgSzm1g10zm2g25zv  (click on "load raw data" at the bottom of the chart, and it will show daily traded volume for the past couple of months (maybe 60 days?)

4 best months so far:

12/2017   average price=$14835
 1/2018   average price=$12891
 7/2019   average price=$10665
 8/2019   average price=$10612

#methree

Go Bitcoin Go!

My problem is I have a scientific background and appreciate little details like evidence and logic before jumping to conclusions that serve to reconfirm my world view.

Not sure about that, would be enormously shortsighted considering the growth potential Bitcoin has. On the other hand, the western world initially didn’t care much about a few hundred corona infections somewhere in China either.
Exponential growth is hard to grasp but we can’t be naive either. Bitcoin is a big threat for those with fiat powers.

This has been my №1 chart since you've posted it first here.

We may notice that the lower line corresponds to a 2x price increase per year if we round the price to 50$ at the start of 2013. That is an exponential growth 50x2^t, where t is the number of years since 2014. The remarkable thing is that for 7 years Bitcoin has kept hitting these numbers on the way down after several extra exponential growths related to the halvings. And now Bitcoin is even above the line unlike 2015 and most of 2016. This is a strong sign that the exponential growth will continue at least in the next 2-3 years. We can't be sure if 2021 will have that extra growth, but the longer we stay close to the lower line, the better. Sooner or later Bitcoin will touch and may pass through the upper line for a period.

With that regard, what software/site do you use for that chart?

I would like to make my own chart with years up to 2025.  In my opinion the lower line is very close to the real price of bitcoin, since it reflects the increasing demand (new accounts added to exchanges, etc.) vs selling pressure on exchanges.

For the latter one can judge from the total exchange ballance, which has decreased from 2.8 mil to 2.4 mil in the last 6 months. We can easily find the line equation for each year so that for each day or month the price point is found. Something like y=(x/3)*1600+6400. For example at the end of August (x=8), the price for the bottom line is y~$10 666. We are over 10% above that, so all is good!