PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-07:12:30
G07     344.1          61.9                4.9 +/-    1.03       5.5 +/-    1.03  0.040 / 0.040
G08     95.0           53.3                6.8 +/-    0.70       8.3 +/-    0.70  0.030 / 0.030
G09     183.7          68.0                6.0 +/-    0.65       6.4 +/-    0.65  0.180 / 0.080
G11     143.8          16.8                5.6 +/-    3.40      13.4 +/-    3.40  0.070 / 0.110
G23     156.4          35.3                5.8 +/-    0.81       9.1 +/-    0.81  0.030 / 0.030
G27     51.2           29.2                4.9 +/-    1.74       8.8 +/-    1.74  0.030 / 0.030
G28     238.7          26.5                5.5 +/-    2.15      10.4 +/-    2.15  0.040 / 0.050
G30     304.8          37.2                5.9 +/-    0.96       9.0 +/-    0.96  0.050 / 0.030