PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-20:12:30
G07     22.8           67.8               11.0 +/-    0.70      11.8 +/-    0.70  0.030 / 0.040
G08     65.3           48.2               10.8 +/-    0.82      14.0 +/-    0.82  0.030 / 0.040
G09     180.9          53.6               12.6 +/-    0.68      15.2 +/-    0.68  0.040 / 0.050
G11     130.9          26.6               10.7 +/-    1.09      20.2 +/-    1.09  0.050 / 0.050
G23     160.2          23.3               13.5 +/-    1.01      27.5 +/-    1.01  0.200 / 0.190
G27     42.7           21.1                8.2 +/-    2.37      17.5 +/-    2.37  0.110 / 0.170
G28     253.0          40.2               12.4 +/-    1.83      18.1 +/-    1.83  0.040 / 0.060
G30     318.0          49.0                9.8 +/-    1.03      12.6 +/-    1.03  0.040 / 0.060