The total record length is 16 characters. The data files are in the directory monthly. A value of -2 indicates missing data. The synoptic data product includes data for single days from every station for the years 1966 through 1995. It is intended for users involved in validation of remote sensing or other projects which need data for a single day over a large spatial extent.
All data files are in the synoptic directory.
Each field is fixed length and comma delimited with a total record length of 37 characters. Data that were flagged in this manner have a quality of 0, indicating valid data. The value was set to 99 if there are no data for a particular day such as for the 30th and 31st of February and all other invalid dates. The Station Location documentation contains a full explanation of the corrections that were made. This quality control routine differs from that used in Version 1 of the Historical Soviet Daily Snow Depth, and therefore, the data in Version 2 supersede all data in Version 1.