PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-02:57:30
G02     64.7           27.9                6.9 +/-    1.15      12.6 +/-    1.15  0.110 / 0.090
G05     50.8           54.5                7.7 +/-    0.51       9.3 +/-    0.51  0.100 / 0.080
G12     185.0          28.8               10.7 +/-    1.61      19.2 +/-    1.61  0.200 / 0.290
G13     122.3          18.9                9.8 +/-    0.92      22.2 +/-    0.92  0.280 / 0.270
G15     159.5          17.7                9.0 +/-    1.66      20.9 +/-    1.66  0.080 / 0.130
G21     277.1          22.1               11.5 +/-    2.41      24.1 +/-    2.41  0.070 / 0.110
G25     227.7          47.4               11.4 +/-    3.20      14.9 +/-    3.20  0.040 / 0.030
G29     337.7          64.1                9.9 +/-    0.83      10.9 +/-    0.83  0.040 / 0.040