These are fits to the combined H1-ZEUS HERA I data, variation of HERAPDF1.0 fit
(H1 and ZEUS Collab., F.D. Aaron et al., JHEP01 (2010) 109, 11/09, DESY-09-158)

The fitted pdfs are: u_v, d_v, g, Ubar=ubar+cbar, Dbar=dbar+sbar
Parametrisation form is same as for HERAPDF1.0. 

Following variants have been considered:

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HERAPDF1.0u.LHgrid

1. Relax ubar = dbar  for x->0 assumption
2. Hermes data inspired parameterization for the hermes data:

A tanh threshold function is used to follow the Hermes data
(A. Airapetian et al, Phys. Lett. B 666 (2008) 446). The following
parameters are used:

fstrange=0.5, hermes_xcent=0.07, hermes_xrise= 20.0
         fshermes = fstrange*( 
     $        0.5D0*(1.D0+tanh(-(x-hermes_xcent)*hermes_xrise)))


=============================================

HERAPDF1.0_NNLO_1145.LHgrid.gz	and HERAPDF1.0_NNLO_1176.LHgrid.gz

Two LHgrids for HERAPDF1.0 at NNLO for 

\alpha_s(M_Z)=0.1145 and  \alpha_s(M_Z)=0.1176 

are supplied as follows from the file names

The fits were run under exactly the same conditions as the published 
HERAPDF1.0 NLO central fit with the only changes being 
that Qcdnum17 evolution is done at NNLO and that the heavy quark coefficient 
functions of the Thorne-Roberts Variable Flavour Scheme are applied at NNLO.