PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-09:27:50
G03     236.0          66.1                2.8 +/-    0.49       3.0 +/-    0.49  0.060 / 0.060
G07     250.9          12.2                4.0 +/-    2.16      10.7 +/-    2.16  0.070 / 0.080
G09     306.3          22.9                1.3 +/-    1.10       2.6 +/-    1.10  0.050 / 0.060
G14     103.4          10.4                1.5 +/-    1.86       4.1 +/-    1.86  0.040 / 0.070
G16     121.3          61.8                6.5 +/-    0.83       7.3 +/-    0.83  0.050 / 0.050
G22     190.9          51.2                5.7 +/-    2.07       7.0 +/-    2.07  0.050 / 0.050
G23     321.1          50.8                2.8 +/-    1.69       3.5 +/-    1.69  0.090 / 0.490
G26     65.2           50.8                3.2 +/-    1.08       4.0 +/-    1.08  0.100 / 0.440
G31     53.9           17.0                0.3 +/-    0.55       0.8 +/-    0.55  0.130 / 0.390