PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/25-08:27:40
G07     333.8          58.7                4.2 +/-    0.85       4.9 +/-    0.85  0.040 / 0.040
G08     109.3          51.4                8.0 +/-    0.64       9.9 +/-    0.64  0.050 / 0.050
G09     194.0          76.0                3.9 +/-    1.13       4.0 +/-    1.13  0.040 / 0.080
G11     147.7          12.4                4.3 +/-    1.77      11.4 +/-    1.77  0.050 / 0.080
G23     153.8          41.5                7.2 +/-    1.15      10.2 +/-    1.15  0.070 / 0.190
G27     57.8           33.0                3.9 +/-    0.66       6.4 +/-    0.66  0.090 / 0.210
G28     233.8          21.4                6.7 +/-    1.43      14.3 +/-    1.43  0.040 / 0.080
G30     299.9          33.3                5.6 +/-    1.10       9.1 +/-    1.10  0.040 / 0.060