Flow to Measure the coldest temperature daily

problem is he does not write temperature in the table

This where the Idea is coming

it has to record the temperature all day long and make a report of the highest and the lowest outside temperature around 7 pm.
i have a lot of running on better logic,
I will try it on the logic of homey.
I also adjusted the time to that it is not allowed between 19.00 and 19.30 because then he writes the log and resets it for the next day.