MPF ROVER MARS ALPHA PROTON X-RAY
                                      SPECTROMETER DDR V1.0
The APXS_oxides is a listing of weight percent oxide abundances 
derived from the X-ray portion of the APXS_EDR data from the Alpha 
Proton X-ray Spectrometer (APXS).  This data is preliminary and 
will be later refined as new calibration data become available.  Currently, there are oxide results for five rocks and …