PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-00:12:40
G02     253.6          78.8               10.8 +/-    0.73      11.0 +/-    0.73  0.110 / 0.130
G05     169.8          19.1               15.1 +/-    3.32      33.9 +/-    3.32  0.090 / 0.110
G06     39.2           58.8               10.1 +/-    0.57      11.6 +/-    0.57  0.050 / 0.040
G12     320.7          51.8               10.2 +/-    1.57      12.6 +/-    1.57  0.050 / 0.040
G17     73.1           20.0               10.2 +/-    1.11      22.4 +/-    1.11  0.130 / 0.370
G19     59.6           36.6               10.0 +/-    0.79      15.4 +/-    0.79  0.140 / 0.460
G24     241.0          32.9               13.5 +/-    2.52      22.3 +/-    2.52  0.060 / 0.040
G25     316.8          15.2                6.4 +/-    2.55      15.9 +/-    2.55  0.050 / 0.030