PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-04:58:00
G07     351.2          63.4                1.8 +/-    1.05       2.0 +/-    1.05  0.060 / 0.130
G08     80.4           51.8                4.9 +/-    0.56       6.1 +/-    0.56  0.060 / 0.120
G09     183.0          63.0                6.0 +/-    1.91       6.6 +/-    1.91  0.040 / 0.050
G11     138.9          19.0                6.5 +/-    1.67      14.8 +/-    1.67  0.030 / 0.040
G23     158.6          32.8                6.9 +/-    0.82      11.5 +/-    0.82  0.040 / 0.040
G27     46.4           24.9                3.0 +/-    1.64       5.9 +/-    1.64  0.030 / 0.040
G28     246.4          37.8                5.5 +/-    1.49       8.3 +/-    1.49  0.030 / 0.030
G30     310.4          42.2                1.7 +/-    1.11       2.4 +/-    1.11  0.030 / 0.030