PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-07:28:00
G07     353.6          64.3                5.3 +/-    0.89       5.8 +/-    0.89  0.040 / 0.040
G08     86.0           53.5                6.8 +/-    0.84       8.2 +/-    0.84  0.040 / 0.040
G09     181.3          62.5                7.3 +/-    0.96       8.1 +/-    0.96  0.200 / 0.130
G11     140.5          20.2                6.3 +/-    2.70      13.8 +/-    2.70  0.150 / 0.100
G23     157.6          30.1                5.4 +/-    0.66       9.4 +/-    0.66  0.040 / 0.030
G27     47.3           26.1                3.5 +/-    1.92       6.6 +/-    1.92  0.040 / 0.030
G28     242.8          30.3                5.7 +/-    1.37      10.0 +/-    1.37  0.100 / 0.190
G30     308.8          40.7                5.0 +/-    1.26       7.2 +/-    1.26  0.110 / 0.160