PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-12:42:40
G03     236.1          70.4                6.8 +/-    1.08       7.2 +/-    1.08  0.050 / 0.040
G07     246.4          10.2               -7.6 +/-   13.38     -21.1 +/-   13.38  0.040 / 0.060
G09     300.6          14.3                4.6 +/-    1.87      11.7 +/-    1.87  0.030 / 0.050
G14     96.6           16.3                5.7 +/-    1.85      13.8 +/-    1.85  0.030 / 0.050
G16     137.5          54.6                7.2 +/-    0.56       8.6 +/-    0.56  0.130 / 0.340
G22     193.3          56.8                6.8 +/-    1.08       7.9 +/-    1.08  0.120 / 0.330
G23     317.0          46.9                2.9 +/-    1.16       3.8 +/-    1.16  0.100 / 0.340
G26     78.2           54.3                5.0 +/-    0.49       6.0 +/-    0.49  0.110 / 0.330
G31     50.5           22.4                3.5 +/-    0.79       7.3 +/-    0.79  0.060 / 0.070