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Update README.md
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wkozmaNTIA authored Jul 7, 2021
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Expand Up @@ -12,7 +12,7 @@ Companion software ([p528-gui](https://github.com/NTIA/p528-gui)) provides a Gra
| `h_1__meter` | double | meter | 1.5 <= `h_1__meter` <= 20 000 | Height of the low terminal |
| `h_2__meter` | double | meter | 1.5 <= `h_2__meter` <= 20 000 | Height of the high terminal |
| `f__mhz` | double | MHz | 100 <= `f__mhz` <= 30 000 | Frequency |
| `T_pol` | int | | | Polarization. <ul><li>0 = Horizontal</li><li>1 = Vertical</li></ul> |
| `T_pol` | int | | | Polarization <ul><li>0 = Horizontal</li><li>1 = Vertical</li></ul> |
| `time` | double | | 1 <= `time` <= 99 | Time percentage |

## Outputs ##
Expand All @@ -25,8 +25,8 @@ Outputs to P.528 are contained within a defined `Results` structure.
| `A__db` | double | dB | Basic transmission loss |
| `A_fs__db` | double | dB | Free space basic transmission loss |
| `A_a__db` | double | dB | Median atmospheric absorption loss |
| `theta_h1__rad | double | rad | Elevation angle of the ray at the low terminal |
| `propagation_mode` | int | | Mode of propagation. <ul><li>1 = Line of Sight</li><li>2 = Diffraction</li><li>3 = Troposcatter</li></ul> |
| `theta_h1__rad` | double | rad | Elevation angle of the ray at the low terminal |
| `propagation_mode` | int | | Mode of propagation <ul><li>1 = Line of Sight</li><li>2 = Diffraction</li><li>3 = Troposcatter</li></ul> |

## Return Codes ##

Expand All @@ -52,12 +52,12 @@ Note: Return codes over 0xFF0 signify warnings occured in the calculation. Use

The below table includes a select set of example inputs and outputs for testing purposes. The [P.528 CSV data files](https://www.itu.int/rec/R-REC-P.528/en) contain an extensive set of validation example values.

| `d__km` | `h_1__meter` | `h_2__meter` | `f__mhz` | T_pol | `time` | `A__db` |
| --------|--------------|--------------|----------|-------|--------|---------|
| 15 | 10 | 1 000 | 500 | 0 | 50 | 110.0 |
| 100 | 100 | 15 000 | 3 600 | 0 | 90 | 151.6 |
| 1 500 | 15 | 10 000 | 5 700 | 0 | 10 | 293.4 |
| 30 | 8 | 20 000 | 22 000 | 1 | 50 | 151.1 |
| `d__km` | `h_1__meter` | `h_2__meter` | `f__mhz` | `T_pol` | `time` | `A__db` |
| --------|--------------|--------------|----------|---------|--------|---------|
| 15 | 10 | 1 000 | 500 | 0 | 50 | 110.0 |
| 100 | 100 | 15 000 | 3 600 | 0 | 90 | 151.6 |
| 1 500 | 15 | 10 000 | 5 700 | 0 | 10 | 293.4 |
| 30 | 8 | 20 000 | 22 000 | 1 | 50 | 151.1 |

## Notes on Code Style ##

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