Get weekly inflows of the given area for all weeks from 1 to 52 and for all time-series in mcyears.
Please note that if time series index don't correspond to scenario number in scenario builder, this could generate inconsistencies.
Value
A dplyr::tibble() with 4 columns : "timeId" (integer), "tsId" (integer), "hydroStorage" (double) and "area" (character).
Each line give the amount of weekly inflow ("hydroStorage") for area for a week ("timeId") and a scenario ("tsId").