PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/12-05:57:50
G07     12.9           67.7                5.2 +/-    0.50       5.6 +/-    0.50  0.050 / 0.060
G08     68.2           50.2                5.3 +/-    0.33       6.7 +/-    0.33  0.050 / 0.050
G09     177.8          51.0                7.8 +/-    0.62       9.7 +/-    0.62  0.030 / 0.040
G11     134.4          26.4                4.5 +/-    0.78       8.6 +/-    0.78  0.040 / 0.040
G23     159.6          21.6                5.0 +/-    2.41      10.5 +/-    2.41  0.030 / 0.030
G27     41.7           19.3                3.2 +/-    2.46       7.1 +/-    2.46  0.030 / 0.040
G28     251.2          36.8                7.4 +/-    1.48      11.3 +/-    1.48  0.190 / 0.130
G30     315.7          46.7                4.4 +/-    0.74       5.8 +/-    0.74  0.100 / 0.120