PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/04-08:27:50
G05     51.2           11.2                2.0 +/-    2.38       5.6 +/-    2.38  0.060 / 0.090
G10     240.1          17.9                5.1 +/-    2.06      11.7 +/-    2.06  0.070 / 0.100
G13     67.5           34.8                3.6 +/-    1.16       5.7 +/-    1.16  0.110 / 0.170
G15     112.1          55.7                5.1 +/-    0.36       6.0 +/-    0.36  0.090 / 0.140
G16     313.2          11.5                1.0 +/-    5.31       2.7 +/-    5.31  0.300 / 0.420
G20     254.3          41.9                4.7 +/-    2.36       6.6 +/-    2.36  0.210 / 0.470
G21     323.8          54.1                3.4 +/-    0.34       4.0 +/-    0.34  0.030 / 0.030
G26     286.2          18.1                3.2 +/-    1.01       7.3 +/-    1.01  0.030 / 0.030
G29     155.2          60.0                6.1 +/-    0.51       7.0 +/-    0.51  0.040 / 0.040