def METHOD_NAME(self):
    info = self.find_indextype(self.SPEC_HEADER)
    _, _, offset, length = self.sections()[info]
    with open(self.filename, 'rb') as f:
        f.seek(offset)
        dataType, numPoints, xUnits, yUnits, firstX, lastX, noise = \
            struct.unpack('<iiiifff', f.read(28))
        return numPoints, firstX, lastX,