Data information:

Level 0

Binary instrument data

Level 1a

Spacecraft attitude information

Precise orbit determination antenna tracking data

Radio occultation antenna tracking data

Level 1b

Precise orbit determination solutions

Atmospheric excess phase

Absolute total electron content

Level 2

Atmospheric profiles

Electron density profiles 

IVM in-situ density

Data Introduction: https://www.cosmic.ucar.edu/what-we-do/cosmic-2/data

Data access: https://data.cosmic.ucar.edu/gnss-ro/cosmic2/