With the assistance of the creation of the game ION The Game, we publish the data format (*.ion) from a space ion probe AIS/M (developed in 1961):
| Name | Meaning | Example |
| nay | Time and date of the current sensing | Sat Jun 13 14:00:00 2009 |
| StartFreq | Initial frequency sensing | StartFreq=1000 |
| StopFreq | End Frequency Sensing | StopFreq=9000 |
| StepFreq | Step frequency sensing | StepFreq=15 |
| ZeroTact | Setting the zero step | ZeroTact=0 |
| Impulses | The number of pulses | Impulses=2 |
| Filter | Flag enable filtering | Filter=0 |
| FilterLevel | The threshold level filtering | FilterLevel=16 |
| Attenuator | The initial position of the attenuator | Attenuator=4 |
| AutoAtt | Enabling auto-control of the attenuator | AutoAtt=1 |
| AutoTimer | Enabling auto-sensing | AutoTimer=1 |
| TimerInterval | Interval (min.) auto-sensing | TimerInterval=15 |
| nay | Start time and date of the sensing | OnTimer 05.45 13.06.2009 |
| OffTimer | Time and date of completion of the sensing | OffTimer=21:52 31.12.2009 |
| OutputPath | The path to save the file | OutputPath=C:\ais.out\130609\ |
| AutoScan | Selecting the pitch frequency sensing (0 – fixed, 1 – at a predetermined pitch) |
AutoScan=1 |
| FixedFreqFile | Filename fixed frequencies | FixedFreqFile=ais_m.fff |
| TimerRate | The time interval (s.) between readout | TimerRate=10 |
| HConstant | Constant metering delay of the reflected signal (set during commissioning) |
HConstant=28 |
The length of the header may vary. Data following the title begins with 0x130 to 0xo14f. The data is the set of vectors. Each vector has a suffix 0x01 and the prefix 0x00. The prefix should be heading – two bytes of the current frequency in kHz, two bytes long compressed vector, two-byte integral noise or parity check. After a header followed by the data sensing vector. Compression is performed by a series of successive compression. Couple byte 0x00YY prefix 0x00 and index replay zeros YY. The sequence of zeros more 0xFF, apply the required number of repetitions. Not zero values are not compressed. Typically, each file contains a few hundred vectors. The length of the files *.ion may vary 10-70 kilobyte.
