PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/03-12:12:50
G01     68.2           32.5                2.7 +/-    1.18       4.5 +/-    1.18  0.040 / 0.030
G07     138.6          28.7                4.3 +/-    1.32       7.8 +/-    1.32  0.040 / 0.030
G11     51.3           27.8                2.1 +/-    0.96       3.8 +/-    0.96  0.070 / 0.070
G13     271.2          37.4                4.0 +/-    3.74       6.1 +/-    3.74  0.070 / 0.070
G15     304.3          13.6                2.4 +/-    1.37       6.1 +/-    1.37  0.080 / 0.110
G17     239.5          73.5                5.3 +/-    0.84       5.5 +/-    0.84  0.060 / 0.100
G18     46.7           16.5                2.2 +/-    1.80       5.2 +/-    1.80  0.150 / 0.280
G19     225.5          40.0                3.8 +/-    1.69       5.5 +/-    1.69  0.230 / 0.300
G28     22.8           58.9                3.4 +/-    1.61       3.9 +/-    1.61  0.050 / 0.090
G30     138.0          61.9                4.6 +/-    0.50       5.2 +/-    0.50  0.050 / 0.090