table1: tab.tf.fundamentals
this table contains fundamental mode frequencies for 0t25 to 0t250.
the columns of numbers are (SW stand for surface wave study,
                            MD for mode study)

tmodes    : reference value (mHz),error (microHz)
mont      : SW, Montagner&Tanimoto, 1990
wong      : SW, Wong, 1989
L&M       : SW, Laske&Masters, 1996
ET&L      : SW, Ekstrom, Tromp&Larson, 1997
T&W       : SW, Trampert&Woodhouse, 1995
RR&M      : MD, Roult, Romanowicz and Montagner, 1990, error
M&L       : MD, Masters&Laske, 1997, error

table2: taba.tf.fundamentals
this table contains fundamental mode frequencies for 0t2 to 0t24.
(all results are from modes studies (mHz) and 
 given with error bars (microHz))

tmodes    : reference value
prem      : anisotropic PREM model, error
R&R       : Resovsky&Ritzwoller, 1998
H&T       : He&Tromp, 1996
WZ&M      : Widmer, Zuern&Masters, 1992
M&W       : Masters&Widmer, 1995
RR&M      : Roult, Romanowicz&Montagner, 1990