$ grep '^2023-08-19 08' 30831geo.csv > 2023-08-19_08.csv
$ python3 process_simple.py 2023-08-19_08.csv
> Writing image to: 2023-08-19_08.jpg
$ grep '^2023-08-20 09' 30831geo.csv > 2023-08-20_09.csv
$ python3 process_simple.py 2023-08-20_09.csv
> Writing image to: 2023-08-20_09.jpg
$ grep '^2023-08-20 07' 30831geo.csv > 2023-08-20_07.csv
$ python3 process_simple.py 2023-08-20_07.csv
> Writing image to: 2023-08-20_07.jpg
