Table 1: Compilation of the interstellar helium parameters as obtained with different methods and comparison with the velocity and temperature in the LIC.
$v_{\rm He}$  $\lambda $  $\beta $   $T_{\rm He}$   $N_{\rm He}$ Method  
[km s-1] [$^{\circ }$] [$^{\circ }$] [K] [cm-3] Instrument Reference
          Neutral gas  
$26.3\pm0.4$   $74.7\pm0.5$   $-5.2\pm0.2$   $6300\pm340$   $0.015\pm0.003$ Ulysses GAS Witte (2004)
          Pickup ions  
          $0.0151\pm0.0015$ Ulysses SWICS Gloeckler et al. (2004)
          UV backscatter  
$24.5\pm2$   $74.7\pm0.5$   $-5.7\pm0.5$   $6500\pm2000$   $ 0.013\pm0.003$ EUVE Vallerga et al. (2004)
   $74.5\pm1$  $-6\pm1$     Prognoz 6 Lallement et al. (2004)
$26.24\pm0.45$ $74.68\pm0.56$   $-5.31\pm0.28$ $6306\pm390$ $0.0148\pm0.0020$ Weighted mean  
          Pickup ions  
    $74.43\pm0.33$       ACE SWICS Gloeckler et al. (2004)
          Absorption  
*$25.7\pm1$      * $7000\pm1000$   Haute-provence Lallement & Bertin (1992)
          Absorption  
       * $7000\pm200$   Hubble ST Linsky et al. (1993)

* LIC bulk parameters.

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