PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/07-09:42:30
G07     335.7          59.4                2.7 +/-    0.60       3.1 +/-    0.60  0.110 / 0.160
G08     108.4          51.7                5.4 +/-    0.66       6.7 +/-    0.66  0.160 / 0.170
G09     194.7          75.8                2.5 +/-    0.68       2.5 +/-    0.68  0.040 / 0.040
G11     147.0          12.9                3.5 +/-    2.86       9.1 +/-    2.86  0.040 / 0.040
G23     153.8          40.0                5.8 +/-    1.40       8.4 +/-    1.40  0.060 / 0.090
G27     57.3           32.8                3.0 +/-    1.19       5.0 +/-    1.19  0.040 / 0.070
G28     234.3          22.2                4.6 +/-    2.49       9.6 +/-    2.49  0.040 / 0.030
G30     300.8          34.4                2.1 +/-    1.41       3.3 +/-    1.41  0.030 / 0.020