PNAC Permament Monitoring Service
---------------------------------
http://pnac.swisstopo.admin.ch/

http://pnac.swisstopo.admin.ch/pages/en/agnes.html
http://pnac.swisstopo.admin.ch/pages/en/zim2.html
http://pnac.swisstopo.admin.ch/pages/en/qsumzim2.html
http://pnac.swisstopo.admin.ch/resplt/zim2.gif
http://pnac.swisstopo.admin.ch/resplt/zim2_nrt.jpg
http://pnac.swisstopo.admin.ch/resplt/zim2_kin.jpg
http://pnac.swisstopo.admin.ch/resplt/zim2_.jpg

http://pnac.swisstopo.admin.ch/pages/en/agnes-status.html

http://pnac.swisstopo.admin.ch/pages/en/amet_statistics.html
http://pnac.swisstopo.admin.ch/pages/en/amet_statistics.html#NUM_SAT

http://pnac.swisstopo.admin.ch/pages/en/pnac-monitoring.html
http://pnac.swisstopo.admin.ch/restxt/odata_gps_day.txt
http://pnac.swisstopo.admin.ch/restxt/odata_glonass_day.txt


CODE's IGS data monitoring statistics
-------------------------------------
http://ftp.aiub.unibe.ch/igsdata/

http://ftp.aiub.unibe.ch/igsdata/odata3_gps_day.txt
http://ftp.aiub.unibe.ch/igsdata/odata3_gps_receiver.txt
http://ftp.aiub.unibe.ch/igsdata/y2020/odata3_gps_d287.txt
http://ftp.aiub.unibe.ch/igsdata/y2020/odata3_gnss_d287.txt


Relevant CODE analysis products
-------------------------------
http://ftp.aiub.unibe.ch/CODE/

CODE Ultra-Rapid Orbits (GRE):
  ftp.aiub.unibe.ch/CODE/COD.EPH_U
CODE pseudorange biases (GRE):
  http://ftp.aiub.unibe.ch/CODE/CODE.BIA

CODE satellite crux/problem/mode file:
  ftp://ftp.aiub.unibe.ch/BSWUSER52/GEN/SAT_2020.CRX

See also:
  http://ftp.aiub.unibe.ch/CODE/LPT/
  http://ftp.aiub.unibe.ch/CODE/LPT/GEN/


Other data sources
------------------
IGS analysis products:
  ftp://cddis.gsfc.nasa.gov/pub/gnss/products/
IGS Ultra-Rapid orbits (igu.sp3.Z):
  ftp://cddis.gsfc.nasa.gov/pub/gnss/products/latest/ultra/

IGS tracking data archive:
  ftp://cddis.gsfc.nasa.gov/pub/gnss/data/

ftp://cddis.gsfc.nasa.gov/pub/gnss/data/daily/2020/287/20d/

ftp://cddis.gsfc.nasa.gov/pub/gnss/data/daily/2020/287/20o/