PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-06:12:50
G07     321.9          54.2                3.6 +/-    1.09       4.4 +/-    1.09  0.040 / 0.040
G08     117.8          47.5                5.7 +/-    0.89       7.4 +/-    0.89  0.030 / 0.050
G09     216.3          82.3                4.2 +/-    0.48       4.3 +/-    0.48  0.050 / 0.050
G16     44.3           13.3                1.6 +/-    4.56       4.3 +/-    4.56  0.050 / 0.050
G23     151.0          50.7                6.0 +/-    0.67       7.6 +/-    0.67  0.020 / 0.030
G27     66.0           35.7                4.7 +/-    1.27       7.4 +/-    1.27  0.030 / 0.030
G28     229.0          14.8                2.9 +/-    7.56       7.2 +/-    7.56  0.140 / 0.260
G30     293.5          27.5                4.3 +/-    2.50       7.9 +/-    2.50  0.090 / 0.260