Using Python numpy: with average high, and average low values calculate the departure from the historical average

Now that you know the highs and lows, let's figure out how far each day is from the historical average

The historical averages are the average highs and lows for all Octobers

The average high for October is historically $62$FThe average low for October is historically $36$F

Calculate an array of departures from the high and an array from the low. NumPy makes this type of math quite simple

Your results will be like this:

departure from highs $[171852391016222121513-11322515-1361313093516135-12-22-15]$ departure from lows $[-21710960614111813101-3-279-1-3576-1-4-10-2210-5-1-2]$