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| insol-package | Solar Radiation |
| daydoy | Dates to day of the year |
| daylength | Calculate Length of Day |
| declination | Declination |
| degrees | Radians to degrees |
| doyday | Day of the year to date |
| eqtime | Equation of Time |
| GCdistance | Great Circle Distance |
| hourangle | Hour Angle |
| insol | Solar Radiation |
| insolation | Direct and diffuse solar radiation. |
| JD | Julian Day |
| JDymd | Julian Day |
| meteoandes | Mountain Meteorological Data |
| normalvector | Computes Vector Normal to Surface |
| p2rho | Air Pressure to Density |
| radians | Degrees to radians |
| rh2sh | Relative Humidity to Specific Humidity |
| sunpos | Azimuth and Zenith of the Sun |
| sunr | Earth Radius Vector |
| sunvector | Solar Vector |
| wvapsat | Saturation Pressure of Water Vapor |
| z2p | Altitude to Pressure |