The format is designed to allow the storage of arbitrary numbers of
parameters for arbitrary times. The logical unit is the station-month;
parameters for one month for one station can be stored in a single record,
and a file can consist of multiple records if desired.
Record Format
Record # Format Description
1 A30 Station Name
1 A5 Station code
1 I4 Meridian time used by station
1 F5.1 Latitude N
1 F5.1 Longitude E
1 A10 Scaling type: Manual/Automatic
1 A10 Data editings: Edited/Non-edited/Mixed
1 A30 Ionosonde system name
2,3 30I4* Year
Month
Number of days in the month, M
Number of characteristics
Total number of measurements
Number of measurements for each of the M days,NM
4,i 12A10* List of characteristics
i+1,j 12A10* Dimensions
j+1,k 60A2* List of corresponding URSI codes
k+1,l 20(3I2)* The NM sample times HHMMSS for each of the M days
l+1,m 24(I3,A2)* The N1 values of characteristic 1 for day 1
... ... ...repeated for each of the M days
m+1 24(I3,A2) Hourly medians for characteristic 1
m+2 24(I2,I3) The counts for the hourly medians, Range
m+3 24(I3,A2) Upper quartile
m+4 24(I3,A2) Lower quartile
m+5 24(I3,A2) Upper decile
m+6 24(I3,A2) Lower decile
m+7,n 24(I3,A2)* The N1 values of characteristic 2 for day 1
... ... ...
... repeat for each characteristic.
