PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-04:28:10
G03     216.6          60.2                5.2 +/-    1.24       5.9 +/-    1.24  0.080 / 0.250
G07     256.4          16.5                5.2 +/-    1.08      12.5 +/-    1.08  0.090 / 0.270
G09     309.8          27.7                2.1 +/-    0.98       3.9 +/-    0.98  0.100 / 0.120
G16     97.0           63.1                4.7 +/-    2.04       5.2 +/-    2.04  0.070 / 0.120
G22     191.6          44.3                5.1 +/-    0.76       7.0 +/-    0.76  0.040 / 0.040
G23     331.0          60.3              -19.9 +/-    0.68     -22.5 +/-    0.68  0.040 / 0.040
G26     55.0           43.8                4.5 +/-    1.02       6.2 +/-    1.02  0.050 / 0.040
G31     59.0           9.8                 3.3 +/-    3.33       9.2 +/-    3.33  0.070 / 0.040