PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/28-05:42:40
G01     118.7          16.4                7.3 +/-    2.08      17.6 +/-    2.08  0.050 / 0.030
G07     76.9           66.9                8.8 +/-    0.50       9.5 +/-    0.50  0.040 / 0.030
G08     46.0           33.6                6.0 +/-    1.06       9.7 +/-    1.06  0.060 / 0.080
G09     175.2          26.1                7.6 +/-    1.35      14.5 +/-    1.35  0.060 / 0.080
G11     112.5          40.5                9.1 +/-    0.85      13.2 +/-    0.85  0.030 / 0.030
G13     318.0          19.3                3.9 +/-    0.94       8.7 +/-    0.94  0.030 / 0.030
G17     200.6          21.9                6.5 +/-    2.47      13.6 +/-    2.47  0.110 / 0.250
G28     278.8          50.8                8.2 +/-    2.08      10.2 +/-    2.08  0.230 / 0.280
G30     337.5          64.9                8.2 +/-    0.57       8.9 +/-    0.57  0.050 / 0.090