What is the meaning of the DATA_TIME column in the data output file?
This column encodes the date and time at which a given measurement was taken. The values at the beginning and end of an output file should correspond to the time boundaries specified with the query interface. Each sensor report describes a 20 second interval, so the DATA_TIME values should increase in 20-second increments. The date-time is encoded in a character string with the following format: YYYYMMDDHHmmSSsss, where Y=year, M=month, D=day, H=hour, m=minute, S=second, s=millisecond.
