PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/07-20:27:30
G07     354.0          64.0               14.1 +/-    0.93      15.5 +/-    0.93  0.030 / 0.040
G08     83.7           51.6               14.1 +/-    0.64      17.4 +/-    0.64  0.030 / 0.040
G09     185.2          66.6               14.7 +/-    0.37      15.9 +/-    0.37  0.070 / 0.130
G11     139.6          18.7               16.2 +/-    1.09      36.8 +/-    1.09  0.110 / 0.140
G23     158.1          35.7               15.3 +/-    0.74      24.0 +/-    0.74  0.120 / 0.170
G27     50.6           29.4               11.4 +/-    1.25      20.2 +/-    1.25  0.130 / 0.140
G28     241.7          31.6               14.3 +/-    1.40      24.2 +/-    1.40  0.030 / 0.030
G30     307.7          40.1               12.2 +/-    1.77      17.7 +/-    1.77  0.030 / 0.030