def check_dimensions(self, dataset):
        '''
        Checks that the feature types of this dataset are consitent with a point dataset
        '''
        required_ctx = TestCtx(BaseCheck.HIGH, 'All geophysical variables are point feature types')
        t = util.get_time_variable(dataset)

        # Exit prematurely
        if not t:
            required_ctx.assert_true(False, 'A dimension representing time is required for point feature types')
            return required_ctx.to_result()
        t_dims = dataset.variables[t].dimensions
        o = None or (t_dims and t_dims[0])

        message = '{} must be a valid timeseries feature type. It must have dimensions of ({}), and all coordinates must have dimensions of ({})'
        for variable in util.get_geophysical_variables(dataset):
            is_valid = util.is_point(dataset, variable)
            required_ctx.assert_true(
                is_valid,
                message.format(variable, o, o)
            )
        return required_ctx.to_result()
Checks that the feature types of this dataset are consitent with a point dataset