PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/21-03:28:10
G03     243.5          68.9                3.8 +/-    0.71       4.0 +/-    0.71  0.090 / 0.250
G09     303.2          18.6                3.3 +/-    1.94       7.5 +/-    1.94  0.100 / 0.320
G14     97.8           17.1                3.0 +/-    1.42       7.2 +/-    1.42  0.110 / 0.150
G16     124.5          58.0                5.9 +/-    0.53       6.8 +/-    0.53  0.070 / 0.130
G22     199.1          57.0                4.5 +/-    0.79       5.3 +/-    0.79  0.040 / 0.060
G23     320.0          50.0                4.0 +/-    0.88       5.0 +/-    0.88  0.040 / 0.050
G26     69.8           51.4                4.3 +/-    0.48       5.3 +/-    0.48  0.040 / 0.040
G31     52.5           18.6                3.1 +/-    2.23       7.0 +/-    2.23  0.040 / 0.040