% files downloaded manually from http://www.eye4software.com/resources/ntv2/

file = {'A66 National (13.09.01).gsb',...
        'National 84 (02.07.01).gsb',...
        'CA61_003.GSB',...
        'CA7072_003.GSB',...
        'ntv2_0.gsb',...
        'ntf_r93.gsb',...
        'beta2007.gsb',...
        'ostn02.gsb',...
        'nzgd2kgri0005.gsb'};

land = {'Australia',...
        'Australia',...
        'Brazil',...
        'Brazil',...
        'Canada',...
        'France',...
        'Germany',...
        'Great Britain',...
        'New Zealand'};

for ii=1:length(file)
    try
      D = ntv2_read([file{ii}],'plot',0,'title',land{ii});
      range = num2str([mean(D.dlon(:)) mean(D.dlat(:))]);
    catch
      range = 'failed';
    end
    disp([num2str(ii) ' ' pad(file{ii},' ',30) ' ' land{ii} ': ' range]);
end