Global helioseismology products by Dr. Sylvain Korzennik

Dr. Sylvain Korzennik (Center for Astrophysics Harvard & Smithsonian) has completed the fitting of more HMI and GONG data, using time series of various lengths, up to for GONG: 2025.04.04 (GONG month #304), and for HMI: 2025.04.23 (MDI mission day #11800). He also fitted all the MDI data, or 76 x 72 days (14.98 yr) and the corresponding GONG time interval (1996.05.01 to 2011.04.25). 
 

The tables are available at his website and have been ingested into the JSOC.
 

He has started fitting all the GONG data as one 30 year long time series (152 x 72 days). Note that this time series starts on GONG month 1 or 1995.05.07 (vs MDI's 15 years that starts on MDI mission day no 1216, or 1996.05.01). 

Next, he plans fitting a 15 year long GONG time-series offset by 7.5 year from 1996.05.01 (i.e., 2003.10.28 to 2018.10.21).