{
  "FILE_FORMAT": 1, 
  "FILE_HEADER_LINES": 1, 
  "X1_FACTOR": 0.001, 
  "Y1_FACTOR": 1e-06, 
  "Y2_FACTOR": 1e-06, 
  "Y3_FACTOR": 1e-06, 
  "YEAR_FABRICATION": null, 
  "SURFACE_SHAPE": "spherical", 
  "FUNCTION": null, 
  "LENGTH": 0.120, 
  "WIDTH": null, 
  "THICK": null, 
  "LENGTH_OPTICAL": 0.12, 
  "SUBSTRATE": "silicon", 
  "COATING": "[W/B4C]120,[Ru/B4C]42,[Ru/B4C]20", 
  "FACILITY": "ESRF", 
  "INSTRUMENT": null, 
  "POLISHING": null, 
  "ENVIRONMENT": null, 
  "SCAN_DATE": null, 
  "PLOT_TITLE_X1": "x(mm)", 
  "PLOT_TITLE_Y1": "Slope (urad)", 
  "CALC_HEIGHT_RMS": 0.17, 
  "CALC_HEIGHT_RMS_FACTOR": 1e-9, 
  "CALC_SLOPE_RMS": 0.159, 
  "CALC_SLOPE_RMS_FACTOR": 1e-6, 
  "USER_EXAMPLE": "This is an example of user keyword",
  "USER_ADDED_BY": "Celestre-Vivo-Sanchez del Rio",
  "USER_REFERENCE": "ML monochromator. 3 coatings"
}