PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/08-13:27:50
G01     53.5           27.3                6.4 +/-    1.98      11.9 +/-    1.98  0.040 / 0.040
G06     177.9          20.3               -8.6 +/-   33.55     -18.9 +/-   33.55  0.040 / 0.050
G07     143.8          14.4                8.3 +/-    5.46      20.9 +/-    5.46  0.160 / 0.410
G11     46.0           20.1                6.5 +/-    2.45      14.2 +/-    2.45  0.160 / 0.330
G13     254.6          33.8                9.2 +/-    0.86      14.9 +/-    0.86  0.030 / 0.030
G15     288.8          16.0                6.0 +/-    2.06      14.6 +/-    2.06  0.030 / 0.030
G17     268.6          76.0                7.9 +/-    0.56       8.1 +/-    0.56  0.080 / 0.090
G19     238.8          57.4                7.9 +/-    2.23       9.2 +/-    2.23  0.100 / 0.060
G28     34.3           58.2                8.0 +/-    0.89       9.2 +/-    0.89  0.100 / 0.220
G30     147.2          46.5                8.2 +/-    0.67      10.9 +/-    0.67  0.110 / 0.220