PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-09:12:40
G07     33.2           69.4                4.3 +/-    0.39       4.6 +/-    0.39  0.040 / 0.050
G08     55.3           43.1                2.8 +/-    0.84       3.9 +/-    0.84  0.040 / 0.040
G09     175.1          39.2                5.5 +/-    0.77       8.2 +/-    0.77  0.170 / 0.440
G11     124.0          31.4                4.4 +/-    1.11       7.5 +/-    1.11  0.160 / 0.430
G18     108.8          13.1                3.0 +/-    2.57       7.8 +/-    2.57  0.050 / 0.090
G23     160.9          14.9                3.8 +/-    2.99       9.5 +/-    2.99  0.050 / 0.080
G27     38.9           13.7                1.1 +/-    1.67       2.8 +/-    1.67  0.030 / 0.040
G28     265.2          48.2                4.9 +/-    1.57       6.4 +/-    1.57  0.030 / 0.030
G30     323.8          53.6                4.8 +/-    0.67       5.9 +/-    0.67  0.040 / 0.050