PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-10:58:00
G01     49.4           24.7                2.6 +/-    1.06       5.2 +/-    1.06  0.050 / 0.060
G06     176.6          24.8                5.8 +/-    1.46      11.3 +/-    1.46  0.050 / 0.070
G07     145.4          11.5                2.6 +/-    2.42       7.0 +/-    2.42  0.120 / 0.190
G11     45.0           17.3                1.7 +/-    1.68       4.0 +/-    1.68  0.140 / 0.210
G13     249.7          31.5                5.4 +/-    1.06       9.1 +/-    1.06  0.030 / 0.030
G15     284.8          15.5                3.5 +/-    1.75       8.7 +/-    1.75  0.030 / 0.030
G17     298.0          78.5                6.3 +/-    1.03       6.4 +/-    1.03  0.090 / 0.210
G19     245.6          61.5                7.1 +/-    0.98       8.0 +/-    0.98  0.070 / 0.190
G28     40.7           57.4                4.2 +/-    0.59       4.8 +/-    0.59  0.050 / 0.060
G30     150.0          43.7                6.1 +/-    0.77       8.4 +/-    0.77  0.050 / 0.050