PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-13:12:50
G01     91.8           31.4                6.2 +/-    0.39      10.6 +/-    0.39  0.030 / 0.040
G07     124.2          46.6                6.3 +/-    1.46       8.3 +/-    1.46  0.030 / 0.030
G11     69.2           39.7                5.6 +/-    0.48       8.2 +/-    0.48  0.100 / 0.100
G13     295.9          35.8                6.2 +/-    0.96       9.7 +/-    0.96  0.110 / 0.140
G17     213.1          53.3                9.4 +/-    0.76      11.4 +/-    0.76  0.040 / 0.050
G18     64.7           23.8                5.5 +/-    0.76      11.1 +/-    0.76  0.030 / 0.060
G19     214.2          22.6                7.2 +/-    0.74      15.0 +/-    0.74  0.040 / 0.090
G28     345.8          61.8                4.6 +/-    0.78       5.1 +/-    0.78  0.040 / 0.100
G30     94.8           78.4                6.1 +/-    0.75       6.2 +/-    0.75  0.070 / 0.110