PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-05:42:50
G05     51.0           11.2                2.3 +/-    3.16       6.2 +/-    3.16  0.060 / 0.040
G10     239.8          17.7                6.5 +/-    4.05      15.2 +/-    4.05  0.050 / 0.050
G13     68.0           34.8                4.8 +/-    1.24       7.7 +/-    1.24  0.130 / 0.190
G15     112.3          55.4                6.5 +/-    0.42       7.8 +/-    0.42  0.090 / 0.140
G16     312.9          11.8               -0.0 +/-   13.41      -0.0 +/-   13.41  0.060 / 0.110
G20     253.8          41.5                7.7 +/-    1.95      10.9 +/-    1.95  0.090 / 0.110
G21     321.2          52.3                4.5 +/-    0.62       5.5 +/-    0.62  0.350 / 0.300
G26     284.9          18.7                4.2 +/-    1.01       9.5 +/-    1.01  0.140 / 0.280
G29     154.8          60.9                6.4 +/-    0.65       7.2 +/-    0.65  0.040 / 0.040