PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-05:57:30
G03     264.0          69.2                2.4 +/-    1.16       2.5 +/-    1.16  0.030 / 0.040
G09     300.8          16.6                1.8 +/-    1.86       4.3 +/-    1.86  0.040 / 0.040
G14     94.5           18.9                2.6 +/-    1.91       5.9 +/-    1.91  0.110 / 0.260
G16     131.1          54.9                2.6 +/-    1.22       3.1 +/-    1.22  0.120 / 0.210
G22     203.8          62.6                2.6 +/-    0.51       2.8 +/-    0.51  0.050 / 0.070
G23     313.9          43.4                1.6 +/-    0.70       2.2 +/-    0.70  0.040 / 0.070
G26     76.1           52.4                2.7 +/-    0.96       3.3 +/-    0.96  0.040 / 0.040
G31     49.9           22.3                0.9 +/-    2.14       1.8 +/-    2.14  0.040 / 0.050