MuonCalibR4::MdtCalibDbAlg::RtTubePayload Node1 MuonCalibR4::MdtCalibDbAlg ::RtTubePayload + eta + phi + tZero + meanAdc + statusCode + ml + tube + layer + appliedT0 Node2 std::string Node2->Node1 +station Node3 std::basic_string< char > Node3->Node2