PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-09:12:50
G03     239.1          66.7                3.3 +/-    1.51       3.5 +/-    1.51  0.030 / 0.040
G07     250.0          11.4                3.4 +/-    8.11       9.3 +/-    8.11  0.030 / 0.040
G09     305.6          22.1                2.3 +/-    4.76       4.8 +/-    4.76  0.040 / 0.060
G14     102.4          11.2                1.7 +/-    1.58       4.7 +/-    1.58  0.030 / 0.050
G16     124.1          61.0                6.0 +/-    0.68       6.8 +/-    0.68  0.090 / 0.500
G22     191.8          52.6                5.5 +/-    1.00       6.7 +/-    1.00  0.090 / 0.540
G23     320.1          49.8                3.5 +/-    2.82       4.4 +/-    2.82  0.100 / 0.440
G26     67.0           51.6               -0.3 +/-   28.84      -0.4 +/-   28.84  0.160 / 0.470
G31     53.3           18.0                2.2 +/-    5.64       5.2 +/-    5.64  0.040 / 0.070