PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-03:58:00
G01     66.0           32.2                4.0 +/-    0.58       6.8 +/-    0.58  0.040 / 0.040
G07     139.7          27.2                7.0 +/-    1.41      13.0 +/-    1.41  0.040 / 0.050
G11     52.0           29.0                3.0 +/-    1.11       5.3 +/-    1.11  0.030 / 0.030
G13     270.5          36.5                4.9 +/-    1.08       7.6 +/-    1.08  0.030 / 0.030
G15     298.1          16.4                3.4 +/-    1.86       8.1 +/-    1.86  0.050 / 0.120
G17     242.5          72.4                6.6 +/-    0.90       6.9 +/-    0.90  0.050 / 0.120
G19     227.8          46.7                6.2 +/-    0.28       8.1 +/-    0.28  0.090 / 0.230
G28     28.0           57.9                2.0 +/-    0.46       2.3 +/-    0.46  0.070 / 0.220
G30     138.9          54.4                6.0 +/-    1.24       7.2 +/-    1.24  0.040 / 0.080