PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-03:57:40
G03     248.2          69.5                3.7 +/-    0.48       3.9 +/-    0.48  0.040 / 0.050
G09     302.1          17.1                1.0 +/-    1.79       2.3 +/-    1.79  0.040 / 0.060
G14     96.5           17.9                4.3 +/-    1.00       9.9 +/-    1.00  0.120 / 0.320
G16     127.7          56.7                4.7 +/-    0.79       5.5 +/-    0.79  0.130 / 0.390
G22     200.4          58.7                3.7 +/-    0.99       4.2 +/-    0.99  0.070 / 0.070
G23     318.9          49.0              -17.8 +/-    1.02     -22.7 +/-    1.02  0.040 / 0.050
G26     72.5           52.1                4.0 +/-    0.42       4.9 +/-    0.42  0.110 / 0.170
G31     51.7           19.9                1.1 +/-    0.85       2.4 +/-    0.85  0.110 / 0.230