37 case Hal::TwoTrack::PairType::kSignal: {
42 case Hal::TwoTrack::PairType::kBackground: {
47 case Hal::TwoTrack::PairType::kMixed: {
52 case Hal::TwoTrack::PairType::kRotated: {
57 case Hal::TwoTrack::PairType::kHemishpere: {
62 case Hal::TwoTrack::PairType::kOther: {