Extended Data Fig. 6: Abundance measurement from correlations.
From: Chandrayaan-3 APXS elemental abundance measurements at lunar high latitude
An example of abundance measurement of the lunar sample (observation ID 15) from correlations obtained from ground calibration is shown. Dashed lines and faint points are correlations from USGS samples shown in Supplementary Figs. 2 and 3. Vertical grey shades show the measured line intensity with error from the lunar observation. Three solid lines show the correlation for the measured distance (orange) and at one standard deviation of the distance (blue and green). Matrix-corrected flux values are plotted on these correlations to obtain the abundances (error bars with respective colours). Measured abundance is shown with the red star symbols and associated uncertainties, including the distance uncertainties, are also shown.
