Program: 62524
Project: 62524
Buggy source:
@Override protected State getNAThingProperty(String channelId){
  if (device != null) {
    NADashboardData dashboardData=device.getDashboardData();
switch (channelId) {
case CHANNEL_CO2:
      return toDecimalType(dashboardData.getCO2());
case CHANNEL_TEMPERATURE:
    return toDecimalType(dashboardData.getTemperature());
case CHANNEL_MIN_TEMP:
  return toDecimalType(dashboardData.getMinTemp());
case CHANNEL_MAX_TEMP:
return toDecimalType(dashboardData.getMaxTemp());
case CHANNEL_TEMP_TREND:
return toStringType(dashboardData.getTempTrend());
case CHANNEL_NOISE:
return toDecimalType(dashboardData.getNoise());
case CHANNEL_PRESSURE:
return toDecimalType(dashboardData.getPressure());
case CHANNEL_PRESS_TREND:
return toStringType(dashboardData.getPressureTrend());
case CHANNEL_ABSOLUTE_PRESSURE:
return toDecimalType(dashboardData.getAbsolutePressure());
case CHANNEL_TIMEUTC:
return toDateTimeType(dashboardData.getTimeUtc());
case CHANNEL_DATE_MIN_TEMP:
return toDateTimeType(dashboardData.getDateMinTemp());
case CHANNEL_DATE_MAX_TEMP:
return toDateTimeType(dashboardData.getDateMaxTemp());
case CHANNEL_HUMIDITY:
return toDecimalType(dashboardData.getHumidity());
case CHANNEL_HUMIDEX:
return toDecimalType(WeatherUtils.getHumidex(dashboardData.getTemperature(),dashboardData.getHumidity()));
case CHANNEL_HEATINDEX:
return toDecimalType(WeatherUtils.getHeatIndex(dashboardData.getTemperature(),dashboardData.getHumidity()));
case CHANNEL_DEWPOINT:
return toDecimalType(WeatherUtils.getDewPoint(dashboardData.getTemperature(),dashboardData.getHumidity()));
case CHANNEL_DEWPOINTDEP:
Double dewpoint=WeatherUtils.getDewPoint(dashboardData.getTemperature(),dashboardData.getHumidity());
return toDecimalType(WeatherUtils.getDewPointDep(dashboardData.getTemperature(),dewpoint));
case CHANNEL_WIND_UNIT:
return userAdministrative != null ? new DecimalType(userAdministrative.getWindunit()) : UnDefType.UNDEF;
case CHANNEL_PRESSURE_UNIT:
return userAdministrative != null ? new DecimalType(userAdministrative.getPressureunit()) : UnDefType.UNDEF;
}
}
return super.getNAThingProperty(channelId);
}

Fixed version (ground truth):
@Override protected State getNAThingProperty(String channelId){
  if (device != null) {
    NADashboardData dashboardData=device.getDashboardData();
switch (channelId) {
case CHANNEL_CO2:
      return toDecimalType(dashboardData.getCO2());
case CHANNEL_TEMPERATURE:
    return toDecimalType(dashboardData.getTemperature());
case CHANNEL_MIN_TEMP:
  return toDecimalType(dashboardData.getMinTemp());
case CHANNEL_MAX_TEMP:
return toDecimalType(dashboardData.getMaxTemp());
case CHANNEL_TEMP_TREND:
return toStringType(dashboardData.getTempTrend());
case CHANNEL_NOISE:
return toDecimalType(dashboardData.getNoise());
case CHANNEL_PRESSURE:
return toDecimalType(dashboardData.getPressure());
case CHANNEL_PRESS_TREND:
return toStringType(dashboardData.getPressureTrend());
case CHANNEL_ABSOLUTE_PRESSURE:
return toDecimalType(dashboardData.getAbsolutePressure());
case CHANNEL_TIMEUTC:
return toDateTimeType(dashboardData.getTimeUtc());
case CHANNEL_DATE_MIN_TEMP:
return toDateTimeType(dashboardData.getDateMinTemp());
case CHANNEL_DATE_MAX_TEMP:
return toDateTimeType(dashboardData.getDateMaxTemp());
case CHANNEL_HUMIDITY:
return toDecimalType(dashboardData.getHumidity());
case CHANNEL_HUMIDEX:
return toDecimalType(WeatherUtils.getHumidex(dashboardData.getTemperature(),dashboardData.getHumidity()));
case CHANNEL_HEATINDEX:
return toDecimalType(WeatherUtils.getHeatIndex(dashboardData.getTemperature(),dashboardData.getHumidity()));
case CHANNEL_DEWPOINT:
return toDecimalType(WeatherUtils.getDewPoint(dashboardData.getTemperature(),dashboardData.getHumidity()));
case CHANNEL_DEWPOINTDEP:
Double dewPoint=WeatherUtils.getDewPoint(dashboardData.getTemperature(),dashboardData.getHumidity());
return toDecimalType(WeatherUtils.getDewPointDep(dashboardData.getTemperature(),dewPoint));
case CHANNEL_WIND_UNIT:
return userAdministrative != null ? new DecimalType(userAdministrative.getWindunit()) : UnDefType.UNDEF;
case CHANNEL_PRESSURE_UNIT:
return userAdministrative != null ? new DecimalType(userAdministrative.getPressureunit()) : UnDefType.UNDEF;
}
}
return super.getNAThingProperty(channelId);
}