Fig. 6From: Estimation of temporal and spatial variation of sound speed in ocean from GNSS-A measurements for observation using moored buoyEstimated temporal variation of averaged sound speed. Black lines indicate estimated variation from the profile observed on each day. Pink broken lines indicate estimated variation from the profile observed on a 6 June 2017, and b 5 June 2019, respectively. The offset was calculated by averaging the residual of value estimated from different profilesBack to article page