You are correct. The logging radio button had become unchecked. Once check, I was able to delete the existing log. It was desirable to delete the existing log since it had many 1 minute ‘test’ entries. I will confirm logging and logging format over the rest of the week.
The city I live in had instituted some fairly draconian water restrictions. I am watering at exactly the maximum. If challenged by some fine hungry bureaucrat, I would like to be able to prove that I am in compliance.