  We present the results of fitting all data for $pp$ and $\bar pp$ scattering
at $\sqrt s \geq 9.7$ Gev and up to the collider energy with various analytic
parametrizations of the elastic forward scattering amplitudes based on the
derivative dispersion relation. It is found that the model containing the
Pomeron and Reggeon terms with 8 parameters has the most preferred
$\chi^2/d.o.f = 1.3$, while the Donnachie and Landshoff model with 5 parameters
has $\chi^2/d.o.f = 2.16$ for a data set of 111 experimental points. The
current data however make no clear preference between the $\ell n s$ and $\ell
n^2 s$ type Pomerons.
