PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-00:42:30
G07     327.2          55.6                5.3 +/-    1.18       6.3 +/-    1.18  0.110 / 0.210
G08     107.0          50.6                9.3 +/-    0.73      11.7 +/-    0.73  0.100 / 0.240
G09     204.4          78.3                7.0 +/-    0.93       7.2 +/-    0.93  0.040 / 0.060
G11     149.5          10.0               -7.1 +/-   10.63     -19.9 +/-   10.63  0.050 / 0.050
G16     45.4           12.5                3.0 +/-    1.75       7.8 +/-    1.75  0.030 / 0.050
G23     154.0          45.9                9.8 +/-    0.59      13.0 +/-    0.59  0.040 / 0.050
G27     58.3           32.9                5.0 +/-    0.76       8.3 +/-    0.76  0.150 / 0.290
G28     234.5          27.0                6.8 +/-    1.26      12.7 +/-    1.26  0.210 / 0.330
G30     300.4          34.8                6.0 +/-    0.91       9.6 +/-    0.91  0.040 / 0.040