Add script for 'calpost_get_concentrations_from_time_series_file'
Write RasterLayer object for the UTM receptor grid to disk
Add require statements
Read in all lines from the CALPOST time series output file
Add 3 arguments to the function
Get numeric vector of all receptor numbers
Get numeric vector of all x coordinate values in units of km
Get numeric vector of all y coordinate values in units of km
Generate data frame for each cell at every timestep
Initialize an outside loop data frame object
Extract a string from the 'time_series_output' object
Get the POSIXct date from the string
Get vector object with concentrations at each receptor for the hour
Create a for structure for an inner loop
Initialize a smaller data frame for the inner loop
Populate the rows of the smaller data frame
Successively bind the smaller data frame to the larger
Return the 'concentration_df' object invisibly
Add argument 'return_large_df' to function
Return data frame object only if the argument is TRUE