PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/24-07:58:00
G01     225.6          16.4                3.4 +/-    2.46       8.3 +/-    2.46  0.040 / 0.040
G03     286.3          67.4                2.8 +/-    0.72       3.0 +/-    0.72  0.040 / 0.040
G09     295.1          9.8               -16.2 +/-   12.94     -45.3 +/-   12.94  0.090 / 0.190
G14     86.6           25.4                4.7 +/-    1.22       9.2 +/-    1.22  0.110 / 0.190
G16     142.3          47.2                5.9 +/-    0.73       7.7 +/-    0.73  0.040 / 0.050
G22     213.1          69.6                5.5 +/-    0.40       5.8 +/-    0.40  0.040 / 0.050
G23     308.6          38.7                3.2 +/-    1.13       4.7 +/-    1.13  0.050 / 0.080
G26     91.7           53.6                4.9 +/-    0.51       6.0 +/-    0.51  0.040 / 0.090
G31     46.3           29.2                1.5 +/-    0.97       2.7 +/-    0.97  0.120 / 0.230