Parameter | Code | Dimension | Description |
---|---|---|---|
foF2 | 00 | .1 MHz | F2 layer o-mode (ordinary) critical frequency. |
fxF2 | 01 | .1 MHz | F2 layer x-mode (extraordinary) critical frequency. |
fzF2 | 02 | .1 MHz | F2 layer z-mode critical frequency. |
M3000F2 | 03 | .01 | F2 layer M factor (the ratio of the maximum usable frequency divided by the critical frequency). |
h'F2 | 04 | km | F2 layer o-mode minimum virtual height. |
hpF2 | 05 | km | An estimate of the true height of the F2 layer (measurement of the ordinary mode virtual height at a frequency of 83.4% of the foF2). |
h'Ox | 06 | km | F layer minmum virual height of the x-mode trace at a frequency equal to the foF2. |
MUF3000F2 | 07 | .1 MHz | F2 layer maximum usable frequency for 3000km path. |
hc | 08 | km | The height of the maximum obtained by fitting a theorectical h'F curve for the parabola of best fit to the observed ordinary mode trace near foF2 and correcting for under-lying ionizaton. |
qc | 09 | km | EF layer scale height. |
foF1 | 10 | .01 MHz | F1 layer o-mode critical frequency. |
fxF1 | 11 | .01 MHz | F1 layer x-mode critical frequency |
M3000F1 | 13 | .01 MHz | F1 layer M factor (see code 03). |
h'F1 | 14 | km | F1 layer o-mode minimum virtual height. |
h'F | 16 | km | F layer o-mode minimum virual height. |
MUF3000F1 | 17 | .1 MHz | F1 layer maximum usable frequency(see code 07). |
Parameter | Code | Dimension | Description |
---|---|---|---|
foE | 20 | .01 MHz | E layer o-mode critical frequency. |
foE2 | 22 | .01 MHz | E2 layer o-mode critical frequency (when it occurs it is between the normal E and F1 layers). |
h'E | 24 | km | E layer o-mode minmum virual height. |
h'E2 | 26 | km | E2 layer o-mode minimum virtual height. |
Parameter | Code | Dimension | Description |
---|---|---|---|
foEs | 30 | .1 MHz | Es layer hightest o-mode frequency are which a mainly continuous Es trace is observed. |
fxE | 31 | .1 MHz | Es layer highest x-mode frequency are which a mainly continuous Es trace is observed. |
fbEs | 32 | .1 MHz | The blanketing frequency of layer used to derive foEs. |
ftEs | 33 | .1 MHz | Top frequency of the Es trace (any mode). |
h'Es | 34 | km | The minimim virtual height of the layer used to derive foEs. |
Type of Es | 36 | A characterization of the shape of Es trace. |
Parameter | Code | Dimension | Description |
---|---|---|---|
foF1.5 | 40 | .01 MHz | The o-mode critical frequency of the F1.5 intermediate stratification (between F1 and F2). |
fmin | 42 | .1 MHz | The lowest frequency at whcih an o-mode echo is observed on the ionogram. |
M3000F1.5 | 43 | .01 MHz | F1.5 layer M factor (see code 03). |
h'F1.5 | 44 | km | F1.5 layer o-mode minimum virtual height. |
fm2 | 47 | .1 MHz | The fmin for the second order o-mode trace. |
hm | 48 | km | The height of the maximum electron density of the F2 later calculated by the Titheridge method. |
fm3 | 49 | .1 MHz | The fmin for the third order o-mode trace. |
Parameter | Code | Dimension | Description |
---|---|---|---|
foI | 50 | .1 MHz | The highest o-mode frequency of spread F. |
fxI | 51 | .1 MHz | The highest frequency of spread F traces (any mode). |
fmI | 52 | .1 MHz | The lowest o-mode frequency at which spread traces are observed for the F layer. |
M30001 | 53 | .01 MHz | M Factor deduces from upper frequency edge of spread traces and fxI (see code 03). |
h'I | 54 | km | Minimum slant range of the spread F trace. |
dfs | 57 | .1 MHz | Frequency range of the spread. |
Parameter | Code | Dimension | Description |
---|---|---|---|
fh'F2 | 60 | .1 MHz | Thse frequency at which h'F2 is measured. |
fh'F | 61 | .1 MHz | The frequency at which h'F is measured. |
h'mF1 | 63 | km | The maximum virula height in the o-mode F1 cusp. |
h1 | 64 | km | True height at f1 Titheridge method. |
h2 | 65 | km | True height at f2 Titheridge method. |
h3 | 66 | .01 MHz | True height at f3 Titheridge method. |
h4 | 67 | .01 MHz | True height at f4 Titheridge method. |
h5 | 68 | km | True height at f5 Titheridge method. |
H | 69 | km | Effective scale height at hmF2 Titheridge method. |
Parameter | Code | Dimension | Description |
---|---|---|---|
I2000 | 70 | 1016 e/m2 | Ionospheric electron content Faraday technique. |
I | 71 | 1016 e/m2 | Total electron content to geostationary satellite. |
I1000 | 72 | 1016 e/m2 | Ionospheric electron content to height 100 km using Digisonde technique. |
T | 79 | 1016 e/m2 | Total sub-peak content. Titheridge method. |
Parameter | Code | Dimension | Description |
---|---|---|---|
FMINF | 80 | .1 MHz | Minimum frequency of E trace (50 kHz increments)Equals fbEs when E present. |
FMINE | 81 | .1 MHz | Minimum frequency of E trace (50 kHz increments). |
HOM | 82 | km | Parabolic E layer peak height. |
yE | 83 | km | Parabolic E layer semi-thickness. |
QF | 84 | km | Average range spread of F trace. |
QE | 85 | km | Average range spread of E trace. |
FF | 86 | .01 MHz | Frequency spread between fxF2 and fxI. |
FE | 87 | .01 MHz | As FF but considered beyond foE. |
fMUF3000 | 88 | .01 MHz | MUF (D) /obliquity factor. |
h'MUF3000 | 89 | km | Virtual height at fMUF. |
Parameter | Code | Dimension | Description |
---|---|---|---|
hmE (zmE) | 90 | km | True height of E-layer, ??? method. |
hmF1 (zmF1) | 91 | km | True height of F1 peak, ??? method. |
hmF2 (zmF2) | 92 | km | True height of F2 peak, ??? method. |
zhalfNm | 93 | km | True height at half peak electron density. |
yF2 | 94 | km | Parabolic F2 layer semi-thickness. |
yF1 | 95 | km | Parabolic F1 layer semi-thickness. |
Parameter | Code | Dimension | Description |
---|---|---|---|
[A0F2] | A0 | km | Coefficient A0, truncated to integer km. |
<A0F2> | A1 | m | A0 - [A0], truncation reminder. |
[A1F2] | A2 | km | Coefficient A1. |
<A1F2> | A3 | m | A1 - [A1]. |
[A2F2] | A4 | km | Coefficient A2. |
<A2F2> | A5 | m | A2 - [A2]. |
[A3F2] | A6 | km | Coefficient A3. |
<A3F2> | A7 | m | A3 -[A3.] |
[A4F2] | A8 | km | Coefficient A4. |
<A4F2> | A9 | m | A4 - [A4]. |
[fsF2] | AA | MHz | starting frequency of the layer, truncate. |
<fsF2> | AB | kHz | fs - [fs]. |
[fmF2] | AC | MHz | ending frequency fm. |
<fmF2> | AD | kHz | fm - [fm]. |
[hmF2] | AE | km | peak height, truncated. |
<hmF2> | AF | m | hm - [hm]. |
EppF2 | AG | 0.1 km | error per point an average mismatch of original h'(f) trace and the trace reconstructed from the calculated profiles. |
Parameter | Code | Dimension | Description |
---|---|---|---|
[A0F1] | B0 | km | Coefficient A0, truncated to integer km. |
<A0F1> | B1 | m | A0 - [A0], truncation reminder. |
[A1F1] | B2 | km | Coefficient A1. |
<A1F1> | B3 | m | A1 - [A1]. |
[A2F1] | B4 | km | Coefficient A2. |
<A2F1> | B5 | m | A2 - [A2]. |
[A3F1] | B6 | km | Coefficient A3. |
<A3F1> | B7 | m | A3 -[A3]. |
[A4F1] | B8 | km | Coefficient A4. |
<A4F1> | B9 | m | A4 - [A4]. |
[fsF1] | BA | MHz | starting frequency of the layer, truncate. |
<fsF1> | BB | kHz | fs - [fs]. |
[fmF1] | BC | MHz | ending frequency fm. |
<fmF1> | BD | kHz | fm - [fm]. |
[hmF1] | BE | km | peak height, truncated. |
<hmF1> | BF | m | hm - [hm]. |
EppF1 | BG | 0.1 km | error per point an average mismatch of original h'(f) trace and the trace reconstructed from the calculated profiles. |
Parameter | Code | Dimension | Description |
---|---|---|---|
[A0E] | C0 | km | Coefficient A0, truncated to integer km. |
<A0E> | C1 | m | A0 - [A0], truncation reminder. |
[A1E] | C2 | km | Coefficient A1. |
<A1E> | C3 | m | A1 - [A1.] |
[A2E] | C4 | km | Coefficient A2. |
<A2E> | C5 | m | A2 - [A2]. |
[W] | C6 | km | Valley width [W], truncated. |
<W> | C7 | m | W - [W]. |
[D] | C8 | km | Valley depth [D], truncated. |
<D> | C9 | m | D - [D]. |
[fsE] | CA | MHz | starting frequency. |
<fsE> | CB | kHz | fs - [fs]. |
[fmE] | CC | MHz | ending frequency. |
<fmE> | CD | kHz | fm - [fm]. |
[hmE] | CE | km | peak height, truncated. |
<hmE> | CF | m | hm - [hm]. |
EppE | CG | 0.1 km | error per point an average mismatch of original h'(f) trace and the trace reconstructed from the calculated profiles. |
Valley ID | CH | Valley Model ID. | |
B0 | D0 | km | IRI Thickness parameter. |
B1 | D1 | 0.1 | IRI Profile Shape parameter. |
D1 | D2 | 0.1 | IRI Profile Shape parameter, F1 layer. |