Notice to our data users: 

The NOAA Radio Occultation Data Buy 2 Delivery Order 4 data procured from PlanetiQ, spanning from 2024-09-18 to 2025-09-18, are modified by PlanetiQ to add artificial random noise to the original observations before delivery to NOAA and UCAR. The noise is applied such that the PlanetiQ average signal-to-noise ratio between 60-80 km height of straight line is approximately 400 V/V. 

For more information, please go to: https://www.cosmic.ucar.edu/what-we-do/data-processing-center