PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-07:27:30
G07     334.1          58.8                4.6 +/-    0.60       5.3 +/-    0.60  0.040 / 0.040
G08     106.7          51.6                6.5 +/-    0.45       8.1 +/-    0.45  0.030 / 0.040
G09     191.0          75.0                4.5 +/-    0.47       4.6 +/-    0.47  0.050 / 0.090
G11     147.6          12.8                5.3 +/-    1.16      13.8 +/-    1.16  0.050 / 0.100
G23     154.3          41.5                5.0 +/-    0.82       7.1 +/-    0.82  0.030 / 0.020
G27     57.1           32.6                3.7 +/-    2.07       6.2 +/-    2.07  0.030 / 0.030
G28     234.2          21.6                5.4 +/-    3.12      11.3 +/-    3.12  0.040 / 0.040
G30     300.0          33.2                3.5 +/-    1.34       5.7 +/-    1.34  0.040 / 0.040