PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-07:13:00
G07     30.9           69.1                5.5 +/-    0.58       5.9 +/-    0.58  0.040 / 0.070
G08     60.6           47.5                3.6 +/-    0.38       4.7 +/-    0.38  0.040 / 0.050
G09     177.8          44.8                8.1 +/-    0.99      11.0 +/-    0.99  0.030 / 0.030
G11     128.8          30.7                5.9 +/-    1.71      10.3 +/-    1.71  0.030 / 0.040
G18     110.8          12.2                4.3 +/-    2.52      11.4 +/-    2.52  0.130 / 0.260
G23     160.0          15.1                5.4 +/-    2.83      13.3 +/-    2.83  0.110 / 0.190
G27     39.2           14.5                1.0 +/-    2.30       2.5 +/-    2.30  0.130 / 0.520
G28     257.9          41.3                6.1 +/-    1.34       8.7 +/-    1.34  0.110 / 0.400
G30     321.5          52.0                4.9 +/-    1.10       6.0 +/-    1.10  0.150 / 0.210