function GetAllLogisticGrids()
    local resultParts = {}
    resultParts[#resultParts+1] = "---logistic-grids---\n"
    for _,surface in pairs(game.surfaces) do
        local grids = game.forces["player"].logistic_networks[surface.name]
        for _,grid in pairs(grids) do
            resultParts[#resultParts+1] = ("%s:%d:%d:%d:%d:%d:%d"):format(
                surface.name,
                grid.network_id,
                grid.all_construction_robots,
                grid.all_logistic_robots,
                grid.available_construction_robots,
                grid.available_logistic_robots,
                grid.robot_limit)
        end
    end
    return table.concat(resultParts, "\n")
end