PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/26-01:42:50
G01     116.2          20.0                6.9 +/-    0.85      15.3 +/-    0.85  0.040 / 0.060
G07     88.3           64.8                6.0 +/-    0.72       6.5 +/-    0.72  0.040 / 0.050
G08     44.1           29.8                4.6 +/-    1.57       8.1 +/-    1.57  0.140 / 0.140
G09     177.2          23.6                7.8 +/-    1.07      15.8 +/-    1.07  0.150 / 0.200
G11     105.0          40.9                6.7 +/-    0.46       9.6 +/-    0.46  0.100 / 0.120
G13     316.5          21.0                4.0 +/-    1.88       8.5 +/-    1.88  0.070 / 0.110
G17     202.8          27.5                6.8 +/-    2.16      12.5 +/-    2.16  0.030 / 0.030
G28     300.2          58.9                4.9 +/-    0.85       5.6 +/-    0.85  0.030 / 0.030
G30     4.3            73.3                5.3 +/-    0.72       5.5 +/-    0.72  0.070 / 0.130