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Reading the chart is very similar to reading a scatter plot graph. The domain and range axes represent the Right Ascension and Declination respectively. Instead of normal floating point or whole number values on the axes, the value is given in a sexidecimal format ( ##hh:##:## - archours/degrees:arcminutes:arcsecondsmm:ss & ±dd:mm:ss).
All the black objects represent stars found within the radius of the search. Any star whose magnitude is brighter than, or less than, 8 has the largest size associated with it. Stars with magnitudes between 8 and 13 are given medium sized dots and all other stars with a magnitude fainter than 13 are represented by the smallest of dots. The Blue dot represents the given RA and Dec that the query was based around.
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