Fig. 2
From: Assessing IGS GPS/Galileo/BDS-2/BDS-3 phase bias products with PRIDE PPP-AR
STDs of wide-lane and narrow-lane phase biases for the GPS/Galileo/BDS-2 satellites. The top panel plots wide-lane STDs over days 001 to 030 of 2019, and the bottom panel plots one-day narrow-lane STDs for day 001, 2019. The reference satellites are G01, E01 and C06 for GPS, Galileo and BDS-2 satellites, respectively. WUM, COM and GRG products do not have time-variable narrow-lane phase biases