Instrument code: the following codes shall be used for the samplers for meteorology: 10 manual reading; 20 mechanical recording; 30 paper recording; 40 digital recording (stand alone); 50 digital recording (integrated datalogger). When more instruments of different types, brands, etc. are used, the single numbers can be used (e.g. 11; hair hygrometer, 12 wet/dry bulb). Details on the equipment used shall be stated in an annex to the document with the meteorologic evaluation.
