PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/14-06:58:00
G07     24.2           68.7                6.5 +/-    0.70       6.9 +/-    0.70  0.040 / 0.040
G08     58.8           45.1                6.1 +/-    0.55       8.1 +/-    0.55  0.070 / 0.050
G09     174.7          42.6                7.7 +/-    1.08      10.8 +/-    1.08  0.030 / 0.030
G11     127.0          29.3                8.6 +/-    0.96      15.3 +/-    0.96  0.030 / 0.030
G18     111.3          11.3                6.2 +/-    1.94      16.8 +/-    1.94  0.120 / 0.220
G23     160.9          19.1                7.0 +/-    1.83      15.7 +/-    1.83  0.070 / 0.230
G27     40.3           17.0                3.3 +/-    2.05       7.7 +/-    2.05  0.140 / 0.330
G28     260.2          45.6                8.0 +/-    2.53      10.6 +/-    2.53  0.120 / 0.390
G30     320.3          50.6                5.1 +/-    0.88       6.4 +/-    0.88  0.050 / 0.070