\begin{table}%t2 \par \caption{\label{tab:resultsHEAO-lowE}Same as in Table~\ref{tab:resultsHEAO}, testing different B/C data sets.} %\centerline {\begin{tabular}{cccccc} \hline\hline Model-Data & $\lambda_{0}$ & $R_0$ & $\delta$ & ${\cal V}_a$ & $\chi_{{\rm min}}^2/$d.o.f. \\ & (g$~$cm$^{-2})$ & (GV) & & (km s$^{-1}$~kpc$^{-1})$ & \\ III-A & $\rm 30^{+5}_{-4}$ & $\rm 2.8^{+0.6}_{-0.8}$ & $\rm 0.58^{+0.01}_{-0.06}$ & $\rm 75^{+10}_{-13}$ & 1.30\\ III-B & $\rm 28^{+2}_{-3}$ & $\rm 2.6^{+0.4}_{-0.7}$ & $\rm 0.53^{+0.02}_{-0.03}$ & $\rm 85^{+9}_{-8}$ & 1.09\\ III-C & $\rm 27^{+2}_{-2}$ & $\rm 2.6^{+0.4}_{-0.7}$ & $\rm 0.53^{+0.02}_{-0.03}$ & $\rm 86^{+9}_{-5}$ & 1.06\\ III-D & $\rm 26^{+2}_{-2}$ & $\rm 3.0^{+0.4}_{-0.5}$ & $\rm 0.52^{+0.02}_{-0.02}$ & $\rm 95^{+7}_{-6}$ & 4.15\\ III-E & $\rm 30^{+2}_{-2}$ & $\rm 3.7^{+0.2}_{-0.3}$ & $\rm 0.57^{+0.01}_{-0.02}$ & $\rm 88^{+3}_{-6}$ & 6.08\\ \hline \end{tabular}} \par \smallskip Note~2: {A $=$ HEAO-3 (14 data points), B $=$ HEAO-3 $+$ ACE (20 data), C~$=$ HEAO-3 $+$ ACE $+$ Voyager$~$1$~$\&$~$2 $+$ IMP7-8 (22~data), D~$=$ HEAO-3 $+$ all low-energy data (30~data), E~$=$ all B/C~data (69~data). } \end{table}