PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-23:12:30
G07     314.9          50.2                6.9 +/-    0.76       8.6 +/-    0.76  0.200 / 0.460
G08     121.5          45.5               11.4 +/-    0.49      15.3 +/-    0.49  0.160 / 0.620
G09     267.9          82.4               10.1 +/-    1.06      10.2 +/-    1.06  0.040 / 0.060
G16     43.0           19.6                6.5 +/-    2.40      14.4 +/-    2.40  0.040 / 0.060
G23     149.1          55.4                9.8 +/-    0.63      11.6 +/-    0.63  0.060 / 0.060
G27     69.0           36.1                7.7 +/-    1.23      12.1 +/-    1.23  0.060 / 0.050
G28     228.2          19.3                8.0 +/-    2.19      18.0 +/-    2.19  0.210 / 0.350
G30     293.1          29.5                7.6 +/-    2.37      13.5 +/-    2.37  0.150 / 0.420