Solar factor calculator-USA

Solar correction for the US based on Nebraska neutron monitor with tau calculated according to McJannet and Desilets.

Pressure, mb	(1100 to 500)
Latitude	(90°N to -90°N)
Longitude	(0°E to 360°E)

References

McJannet, D.L. and Desilets, D., 2023. Incoming Neutron Flux Corrections for Cosmic-Ray Soil and Snow Sensors Using the Global Neutron Monitor Network. Water Resources Research, 59(4), p.e2022WR033889.