@Override
  public String toString() {
    StringBuilder sb = new StringBuilder("[WifiAccessPoint:");
    if (macAddress != null) {
      sb.append(" macAddress=").append(macAddress);
    }
    if (signalStrength != null) {
      sb.append(" signalStrength=").append(signalStrength);
    }
    if (age != null) {
      sb.append(" age=").append(age);
    }
    if (channel != null) {
      sb.append(" channel=").append(channel);
    }
    if (signalToNoiseRatio != null) {
      sb.append(" signalToNoiseRatio=").append(signalToNoiseRatio);
    }
    sb.append("]");
    return sb.toString();
  }
The current signal to noise ratio measured in dB.
src/main/java/com/google/maps/model/WifiAccessPoint.java