PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/16-07:42:50
G02     238.7          76.7                5.4 +/-    0.42       5.5 +/-    0.42  0.310 / 0.440
G05     173.8          12.8                5.0 +/-    4.01      13.1 +/-    4.01  0.240 / 0.290
G06     41.1           60.8                4.6 +/-    0.46       5.2 +/-    0.46  0.030 / 0.040
G12     321.6          51.2                3.3 +/-    0.66       4.1 +/-    0.66  0.030 / 0.050
G17     68.7           22.8                3.3 +/-    2.34       6.7 +/-    2.34  0.030 / 0.030
G19     55.7           38.2                4.9 +/-    2.25       7.4 +/-    2.25  0.030 / 0.030
G24     249.4          35.9                6.4 +/-    2.01      10.0 +/-    2.01  0.210 / 0.430
G28     129.2          11.0                6.4 +/-    2.53      17.4 +/-    2.53  0.250 / 0.420