PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-08:58:00
G01     109.8          22.7                4.9 +/-    1.04      10.1 +/-    1.04  0.030 / 0.070
G07     100.7          59.7                7.2 +/-    0.84       8.2 +/-    0.84  0.040 / 0.050
G08     43.0           26.6                3.5 +/-    0.85       6.6 +/-    0.85  0.090 / 0.170
G09     175.0          17.5                5.9 +/-    1.96      13.7 +/-    1.96  0.080 / 0.190
G11     96.9           43.8                6.5 +/-    0.75       8.9 +/-    0.75  0.060 / 0.090
G13     312.3          26.9                5.5 +/-    1.51      10.2 +/-    1.51  0.050 / 0.120
G17     203.9          30.9                6.3 +/-    2.13      10.8 +/-    2.13  0.060 / 0.180
G18     84.5           23.4                4.0 +/-    0.66       8.1 +/-    0.66  0.060 / 0.170
G28     296.4          56.2                4.8 +/-    0.91       5.6 +/-    0.91  0.080 / 0.190
G30     360.0          74.7                7.6 +/-    0.50       7.8 +/-    0.50  0.070 / 0.220