RIO-12 and RIO-15 TEC data

RIO is a low-power dual‐frequency science‐grade GPS receiver that samples the GPS L1 and L2C signals at 100 Hz and produced estimates of vertical TEC (VTEC) data nominally at 1 Hz (Azeem et al., 2020). RIO builds on the heritage of the CASES (Connected Autonomous Space Environment Sensor) receiver (Crowley et al., 2011; O'Hanlon et al., 2011). In August 2018, two RIO receivers, hereafter referred to as RIO‐12 and RIO‐15, were deployed on the NOAA Tropical Atmosphere Ocean (TAO) buoys in the Pacific Ocean. RIO-12 is located near 5°N (3.73° N dip) while RIO-15 is located near 2°N (3.4° N dip). In this study, we present TEC data collected by RIO-12 and RIO-15 between September 1, 2018, and August 31, 2019.