modify save, save one reading per file, add postfix to file name representing a sensorType, eg.T, H
modify save, save one reading per file, add postfix to file name representing a sensorType, eg.T, H

WeatherStationPaulina/WeatherStation_Sensor_Node,WeatherStationPaulina/WeatherStation_Sensor_Node,WeatherStationPaulina/WeatherStation_Sensor_Node