PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-12:12:50
G01     249.4          34.4                5.9 +/-    1.06       9.5 +/-    1.06  0.050 / 0.090
G03     315.5          47.3                2.6 +/-    1.53       3.5 +/-    1.53  0.050 / 0.080
G11     237.2          11.5                3.5 +/-    1.98       9.4 +/-    1.98  0.030 / 0.040
G14     58.6           43.4                4.5 +/-    0.41       6.2 +/-    0.41  0.030 / 0.050
G18     220.4          26.5                5.3 +/-    1.77      10.0 +/-    1.77  0.100 / 0.210
G22     297.1          72.6                4.2 +/-    0.66       4.4 +/-    0.66  0.070 / 0.170
G23     290.1          24.6               -2.1 +/-    5.57      -4.1 +/-    5.57  0.090 / 0.470
G26     132.2          40.1                6.5 +/-    0.60       9.4 +/-    0.60  0.090 / 0.470
G31     41.1           54.4                3.7 +/-    0.36       4.5 +/-    0.36  0.050 / 0.080
G32     79.6           20.4                4.0 +/-    1.14       8.7 +/-    1.14  0.060 / 0.080