ENA/NEPHELOMETER/C1 - Light source stopped working

The dry nephelometer light source stopped working. These bulbs will last only 1 to 6 year 
before failure. Data are incorrect and should not be used.

Do not use data.

• Aerosol back-hemispheric light scattering coefficient, nominal red wavelength at
  dry or reference RH(Bbs_R_Dry_Neph3W_1)
• Aerosol total light scattering coefficient, nominal red wavelength at dry or
  reference RH(Bs_R_Dry_Neph3W_1)
• Aerosol total light scattering coefficient, nominal green wavelength at dry or
  reference RH(Bs_G_Dry_Neph3W_1)
• Aerosol total light scattering coefficient, nominal blue wavelength at dry or
  reference RH(Bs_B_Dry_Neph3W_1)
• Aerosol back-hemispheric light scattering coefficient, nominal blue wavelength
  at dry or reference RH(Bbs_B_Dry_Neph3W_1)
• Aerosol back-hemispheric light scattering coefficient, nominal green wavelength
  at dry or reference RH(Bbs_G_Dry_Neph3W_1)