Muon::ChamberT0s Node1 Muon::ChamberT0s + ChamberUnknown + ChamberT0s() + ChamberT0s() + ChamberT0s() + ~ChamberT0s() + haveChamber() + getT0() + getAllT0s() Node2 std::vector< std::pair < Identifier, float > > + elements Node2->Node1 -m_t0s