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%Table 1: Source of data for Fig. 1--6
%
\begin{deluxetable}{llllc}
\tabletypesize{\scriptsize}
%\rotate
\tablenum{1}
\tablecaption{Source of data for Fig.1--6.
\label{tab:datainfo}
}
\tablehead{
\colhead{Reference} & \colhead{Frequency} & \colhead{Site} &
\colhead{Epoch} & \colhead{Notes}\\
& \colhead{(GHz)}& & & \\
}
\startdata
\citet{beasley} & 89, 147 & SEST & 1996.4 &\\
\citet{bramwell93} & 2.3, 4.8, 8.4 & HartRAO & 1991--1993 &\\
\citet{edelson87} & 20, 110 & OVRO & 1986.43, 1987.32 &\\
\citet{ghosh94} & 0.327 & OSRT & 1985--1988 &\\
\citet{giacani88} & 1.41 & IAR & 1985.2--1987.1 &\\
\citet{gregorini84} & 0.408 & Bologna Nothern Cross & 1981.8 &\\
\citet{kovalev99} & 0.96, 2.3, 3.9, 7.7, 11.2, 22  & RATAN-600 & 1997.9--1998.0 &\\
\citet{kuhr81} & 0.1--90 & various & 1960--1988 &\\
\citet{quiniento88} & 1.410 & IAR & 1983--1988 &\\
\citet{quiniento90} & 1.410 & IAR & 1983--1990 &\\
\citet{quiniento93} & 1.410 & IAR & 1983--1993 &\\
\citet{reuter} & 90, 142, 230   & IRAM & 1993--1994 &\\
\citet{salonen} & 12, 22, 37 & Mets\"ahovi & 1980--1985.5 & \\
%\citet{steppe88} & 90, 230 & IRAM & 1985.3--1987.3 &\\
\citet{steppe92} & 90, 150, 230 & IRAM & 1987.3--1990.9 &\\
\citet{steppe93} & 90, 150, 230 & IRAM & 1990.9--1993.0 &\\
\citet{terasranta92} & 22, 37, 87 & Mets\"ahovi & 1985.5--1990.5 & \\
\citet{terasranta98} & 22, 37, 87 & Mets\"ahovi & 1990.5--1995.5 & \\
\citet{tingay97} & 0.408--230 & various & various & \tablenotemark{1}\\
\citet{tornikoski93} & 2.3, 4.8, 8.4 & HartRAO        & 1991.0--1991.7 &\\
                     & 22, 43        & Itapetinga     & 1988.1--1990.9 &\\
                     & 90, 230       & SEST           & 1988.3--1992.0 &\\
\citet{tornikoski96} & 90, 230       & SEST           & 1987.8--1994.5 &\\
Tornikoski et al., this paper & 90, 230 & SEST        & 1994.5--1999.8 & \\
\citet{veron96} & 2.7--8.9 & various & various & \tablenotemark{2} \\
\citet{pks} & 0.080--22 & various & various & \\

\enddata
% Tingay:
\tablenotetext{1}{Data only for PKS~1718$-$649.}
% Veron:
\tablenotetext{2}{Data only for PKS~1349$-$439, data collected from
the literature.}
\end{deluxetable}

