ffi_compute_fluxes      Compute fluxes for multiple groups
                        (measurements)
ffi_fit_models          Fit various models to gas concentration data
ffi_hm1981              Compute flux using nonlinear Hutchinson and
                        Mosier (1981) model
ffi_metadata_match      Match metadata info with a vector of data
                        timestamps
ffi_qaqc                Generate a QA/QC document
ffi_read_EGM4           Read an EGM-4 data file
ffi_read_LGR915         Read a LGR 915-0011 data file
ffi_read_LI7810         Read a LI-7810 data file
ffi_read_LI7820         Read a LI-7820 data file
ffi_read_LI850          Read a LI-850 data file
ffi_read_LIsmartchamber
                        Read a LI-8200-01S (smart chamber) data file
ffi_read_PicarroG2301   Read a Picarro G2301 data file
ideal-gas-law           Convert gas concentration to quantity using the
                        Ideal Gas Law
