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  V    B-V    U-B     548 ( 6)  1302 ( 66)
 Geneva  V    U-B    B-V    U-B1    B2-V1  
 d    delta    m2    g  
 UBV pg  V    B-V    U-B     87 ( 300)