PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-08:57:40
G07     19.2           68.4                4.3 +/-    0.56       4.6 +/-    0.56  0.050 / 0.060
G08     60.7           46.3                3.6 +/-    0.70       4.7 +/-    0.70  0.040 / 0.050
G09     175.2          44.5                6.5 +/-    1.35       8.8 +/-    1.35  0.030 / 0.040
G11     128.4          28.3                6.5 +/-    1.11      11.8 +/-    1.11  0.030 / 0.040
G18     113.0          10.6               -3.5 +/-   23.03      -9.6 +/-   23.03  0.110 / 0.380
G23     160.6          19.7                5.3 +/-    1.46      11.7 +/-    1.46  0.100 / 0.280
G27     40.7           17.6                2.8 +/-    0.97       6.5 +/-    0.97  0.040 / 0.060
G28     258.9          45.1                4.1 +/-    1.20       5.6 +/-    1.20  0.040 / 0.060
G30     319.3          49.7                4.0 +/-    1.04       5.0 +/-    1.04  0.040 / 0.100