Index of ftp://ftp.cmdl.noaa.gov/data/aer/smo/2013

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[   ] ESRL-GMD-AEROSOL_v1.0_HOUR_SMO_s20130101T000000Z_e20140101T000000Z_c20200630T202317Z.nc  8.02Mb  June 30 2020
[   ] US6001R.20130101000000.20200630202315.cpc.particle_number_concentration.aerosol.1y.1h.US06L_TSI_3010_SMO.US06L_cpc_ref.lev2.nas  516.56Kb  June 30 2020