Table 5: The relationship between temporal decay index $\alpha $, and spectral slopes $\beta $, for internal and external shock models.
      Forward shock
Source $\alpha_{\rm post\mbox{-}break}$ $\beta_{\rm post\mbox{-}break}$ $p=2\beta$ $\alpha=(3\beta-1)/2$

GRB050126		 $\rm 1.14^{+0.08}_{-0.07}$ $\rm0.72^{+0.65}_{-0.60}$ $\rm 1.44^{+1.2}_{-1.2}$ $\rm0.58^{+0.98}_{-0.90}$

GRB050219a		 $\rm0.75^{+0.09}_{-0.07}$ $\rm0.89^{+0.26}_{-0.23}$ $\rm 1.78^{+0.5}_{-0.5}$ $\rm0.83^{+0.40}_{-0.34}$
      External shock Internal/Reverse shock
      ( $f(\nu,t)\propto t^{-p}\nu^{-p/2}$) ( $f(\nu,t)\propto t^{-2-\beta}\nu^{-\beta}$)
  $\alpha_{\rm pre\mbox{-}break}$ $\beta_{\rm pre\mbox{-}break}$ $p=2\beta$ $\alpha=p$ $\beta $ $\alpha=2+\beta$

GRB050126		 $\rm 2.82^{+0.55}_{-0.44}$ $\rm 1.59^{+0.38}_{-0.35}$ $\rm 3.18^{+0.76}_{-0.70}$ $\rm 3.18^{+0.76}_{-0.70}$ $\rm 1.59^{+0.38}_{-0.35}$ $\rm 3.59^{+0.38}_{-0.35}$

GRB050219a		 $\rm 3.17^{+0.24}_{-0.16}$ $\rm0.98^{+0.18}_{-0.16}$ $\rm 1.96^{+0.36}_{-0.32}$ $\rm 1.96^{+0.36}_{-0.32}$ $\rm0.98^{+0.18}_{-0.16}$ $\rm 2.98^{+0.18}_{-0.16}$


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