To make a plot

  1. Select one or two photometric systems,
  2. Select one or two parameters,
  3. Select one or two data sources,
  4. Click on "Plot".

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SystemParametersData sources (Number of stars)
 UBV CCD  V    B-V    U-B     183 ( 222)
 VIc CCD  V    V-I     183 ( 222)
 OGLE  V    B-V    V-I    sV  
 sB-V    sV-I    ID  
  183 ( 239)