PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-04:12:40
G01     66.7           32.3                5.9 +/-    0.68       9.9 +/-    0.68  0.040 / 0.060
G07     139.4          27.7                8.0 +/-    1.75      14.8 +/-    1.75  0.040 / 0.060
G11     52.4           29.3                4.7 +/-    1.48       8.3 +/-    1.48  0.060 / 0.130
G13     271.3          36.6                5.4 +/-    0.97       8.3 +/-    0.97  0.050 / 0.120
G15     298.7          16.4                3.5 +/-    1.56       8.5 +/-    1.56  0.120 / 0.290
G17     241.1          72.0                6.7 +/-    0.71       7.0 +/-    0.71  0.130 / 0.260
G19     227.2          46.2                5.3 +/-    0.88       7.0 +/-    0.88  0.030 / 0.040
G28     27.0           58.1                3.3 +/-    0.94       3.9 +/-    0.94  0.050 / 0.030
G30     138.3          55.3                8.1 +/-    1.11       9.6 +/-    1.11  0.040 / 0.050