PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/31-04:12:30
G07     345.1          62.3                5.5 +/-    0.70       6.1 +/-    0.70  0.060 / 0.110
G08     87.8           52.5                7.0 +/-    0.74       8.6 +/-    0.74  0.090 / 0.080
G09     179.3          64.1                7.9 +/-    0.35       8.6 +/-    0.35  0.050 / 0.040
G11     143.7          17.8                6.5 +/-    1.69      15.2 +/-    1.69  0.050 / 0.040
G23     157.5          34.8                7.5 +/-    0.88      11.9 +/-    0.88  0.030 / 0.030
G27     49.5           27.9                4.7 +/-    2.48       8.7 +/-    2.48  0.040 / 0.030
G28     240.0          27.1                6.2 +/-    2.64      11.5 +/-    2.64  0.120 / 0.210
G30     305.4          37.2                4.7 +/-    1.51       7.1 +/-    1.51  0.080 / 0.250