PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-12:42:40
G01     67.5           32.4                3.9 +/-    1.42       6.6 +/-    1.42  0.040 / 0.040
G07     139.0          28.2                3.8 +/-    0.84       6.8 +/-    0.84  0.040 / 0.040
G11     51.0           27.5                1.6 +/-    0.85       3.0 +/-    0.85  0.040 / 0.130
G13     270.4          37.3                3.4 +/-    1.25       5.2 +/-    1.25  0.060 / 0.120
G15     303.5          13.8                0.5 +/-    1.96       1.3 +/-    1.96  0.060 / 0.080
G17     240.8          73.6                3.8 +/-    1.16       3.9 +/-    1.16  0.080 / 0.080
G18     46.3           16.2                3.9 +/-    1.65       9.5 +/-    1.65  0.150 / 0.340
G19     226.0          40.8                4.0 +/-    0.96       5.7 +/-    0.96  0.140 / 0.380
G28     24.0           58.7                3.6 +/-    0.36       4.1 +/-    0.36  0.060 / 0.100
G30     138.6          61.1                5.7 +/-    0.71       6.5 +/-    0.71  0.060 / 0.140