Voyager-2 Rate (daily average) The data in this directory contain daily averages of selected hydrogen and helium rates. Each data file consists of a header followed by data. First line identifies the spacecraft; VOYAGER-2 Line 2 contains the time of the first 15 minute interval in ISO 8601 format Line 3 contains the time of the last 15 minute interval in ISO 8601 format Line 4 contains the count of quantities (n) Lines 5 to (4+n) identify the quantities. Each of these lines begins with a number that specifies the position of the quantity in the data lines that follow. Data lines start with ISO 8601 formatted time string that defines the start of the 15 minute interval. Time string is followed by n entries, each of which consists of a pair of numbers. First of these is the value of the quantity and the second represents the statistical uncertainty. A missing measurement is represented by an entry where value is zero and the uncertainty equals -1. If, for lack of coverage, no data was available for an interval, then there is no line for that interval. The measurement unit for all rates is: Counts/Second