'How can I set up a database with one annual dependent variable (Y) and many daily independent variables?

The dependent variable can only be measured once a year, so I have a value over 365 days. The independent variables are daily or weekly (I have data for about 10 years). My goal is to predict the value of Y (one value per year) using daily data.

I tried to do a regression with R, but did not get any significant results. For each year in the column "dependent variable" I have only one value and 364 empty cells. It is not possible to replace the 365 independent variable data with an average because each day influenced the result differently and I would not know how to assign such weights.



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