Code to replicate the harmonic analysis of periodic variations from monthly data done as part of the North Sea investigations at the start of the 20th century.
You will need the api key to fully run the code (or comment out coordinate mapping sections), which relevant people should have, but it's just a simple execution of the main.py file to produce the graphs with the data points from each month, along with their "graph of best fit" and the modified graph.
File structure for data:
Line 1 : what is being measured
Line 2 : the location that the ship comes from
Line 3 : the location the ship goes to
Line 4 : latitude that measurement was taken
Line 5 : longitude that measurement was taken
Line 6 : year measurement was taken
Line 7 - 18 : the measurement for each of the months in order