PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-09:42:50
G07     46.0           69.6                6.4 +/-    0.62       6.8 +/-    0.62  0.030 / 0.030
G08     51.6           40.1                4.2 +/-    1.25       6.1 +/-    1.25  0.040 / 0.050
G09     175.1          34.9                7.0 +/-    0.93      11.1 +/-    0.93  0.070 / 0.300
G11     119.8          34.0                9.2 +/-    1.05      14.9 +/-    1.05  0.090 / 0.270
G17     199.1          13.4                3.4 +/-    3.67       8.8 +/-    3.67  0.200 / 0.490
G18     105.1          15.3                6.4 +/-    3.17      15.8 +/-    3.17  0.190 / 0.450
G23     160.9          10.7                4.8 +/-    2.67      13.3 +/-    2.67  0.030 / 0.030
G27     37.8           10.2                2.5 +/-    3.03       7.0 +/-    3.03  0.030 / 0.030
G28     271.2          50.8                6.1 +/-    3.13       7.6 +/-    3.13  0.130 / 0.260
G30     328.0          57.1                4.9 +/-    0.49       5.7 +/-    0.49  0.130 / 0.300