Iterate question related to list of csv files

Dear Dmitry,
Greetings. It has been a while since my past communications. I have dealt this question before. But I found not to figure out why it doesn’t give me more than 8 occurrences in all my files. To give you an example here is of a temperature of every day categorize in levels. I want to find out in which level was the temperature occurrence and which day. Then find out the total or sum of occurrences. When I do it manually it is 13 occurrence as shown in my chart, but when I compute in the past it does not occur more than 8 times in all my files. As you can see there are are 16 blocks (options) where it could have happened. Can you please help? Thank you
Eyasu
Dm.csv (172 Bytes)