Multivariate regression in R


I am not sure what to use in R. I need to find out if a variable (y) affects data from multiple sites. Readings are taken at say 3 sites every hour, each time a reading is taken so is one for the Y variable. So I have x', x'', x''' and Y for each line of data.

Is this multivariate regression?
Do I use MANOVA or ANOVA or what?

Thank you.


TS Contributor
this looks like a multiple regression to me with your measured value as the dependent and the Y and the locations as independent variables. Location will be categorical and Y is presumably a continuous value.