PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-09:58:10
G01     85.8           32.6                5.0 +/-    1.08       8.4 +/-    1.08  0.020 / 0.030
G07     128.9          41.3                6.2 +/-    0.60       8.8 +/-    0.60  0.030 / 0.030
G11     63.2           37.3                3.5 +/-    0.50       5.4 +/-    0.50  0.090 / 0.090
G13     289.8          37.3                4.0 +/-    1.61       6.2 +/-    1.61  0.090 / 0.090
G17     217.1          59.3                7.7 +/-    0.83       8.8 +/-    0.83  0.040 / 0.050
G18     58.6           22.2                2.2 +/-    1.06       4.7 +/-    1.06  0.050 / 0.070
G19     216.6          26.4                4.8 +/-    1.98       9.2 +/-    1.98  0.080 / 0.110
G28     354.2          61.6                3.8 +/-    1.55       4.3 +/-    1.55  0.080 / 0.120
G30     113.4          75.0                7.5 +/-    1.05       7.8 +/-    1.05  0.060 / 0.170