Index of ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SUNSPOT_REGIONS
Parent Directory
Boulder
19.00b
May 20 2010
Catania
19.00b
September 2 2008
Debrecen
21.00b
May 20 2010
Greenwich
112.00b
September 2 2008
ISES_Alert_Periods
16.00b
February 9 2014
Kandilli
21.00b
May 17 2012
Kodaikanal_Tilt
85.00b
July 16 2008
Mt_Wilson
46.00b
July 16 2008
Mt_Wilson_Tilt
72.00b
July 16 2008
Rome
47.00b
May 20 2010
SGD_Table
17.00b
September 2 2008
Taipei
34.00b
September 2 2008
Tashkent
16.00b
March 11 2010
USAF_MWL
36.00b
January 29 2013
USNO
48.00b
July 16 2008
USSR_Solar_Data
27.00b
July 16 2008
Voroshilov
16.00b
May 4 2010
Yunnan
15.00b
September 2 2008