| 
| id | field name | definition | 
|---|
 | 0 | mph | 
| ascii record "" | size: 1247 | 
|---|
 |  | 1 | sph |  |  | 2 | dsd |  |  | 3 | gadsr | 
| binary array[3650] | size: 73000 | 
|---|
 
| GADS records, one per day 
 
| binary record | size: 20 | 
|---|
 
| 
| id | field name | definition | 
|---|
 | 0 | time_stamp | 
| binary time | size: 12 | 
|---|
 
| Time stamp 
 unit: "s since 2000-01-01"
 
 value: float(./days) * 86400 + float(./seconds) + float(./microseconds) / 1000000
 
 
| binary record | size: 12 | 
|---|
 
| ENVISAT binary datetime 
 
 
| id | field name | definition | 
|---|
 | 0 | days | 
| binary int32 | size: 4 | 
|---|
 
| days since January 1st, 2000 (may be negative) 
 unit: "days since 2000-01-01"
 |  |  | 1 | seconds | 
| binary uint32 | size: 4 | 
|---|
 
| seconds since start of day 
 unit: "s"
 |  |  | 2 | microseconds | 
| binary uint32 | size: 4 | 
|---|
 
| microseconds since start of second 
 unit: "1e-6 s"
 |  |  |  |  |  | 1 | rel_x_position | 
| binary float | size: 4 | 
|---|
 
| X-position of the pole relative to a mean position 
 unit: "arcsec"
 |  |  | 2 | rel_y_position | 
| binary float | size: 4 | 
|---|
 
| Y-position of the pole relative to a mean position 
 unit: "arcsec"
 |  |  |  |  |  |