PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-01:57:50
G01     318.0          21.4                4.7 +/-    2.33      10.0 +/-    2.33  0.040 / 0.060
G08     259.9          12.4                7.7 +/-    7.83      20.4 +/-    7.83  0.040 / 0.060
G10     84.3           50.2                6.4 +/-    1.06       8.1 +/-    1.06  0.250 / 0.420
G11     301.6          23.2                4.5 +/-    1.73       9.2 +/-    1.73  0.160 / 0.420
G14     299.7          70.6                6.5 +/-    0.69       6.9 +/-    0.69  0.040 / 0.030
G18     302.1          42.8                7.2 +/-    1.33      10.0 +/-    1.33  0.030 / 0.040
G20     107.7          27.1                7.0 +/-    2.06      13.0 +/-    2.06  0.110 / 0.230
G22     302.1          11.2                2.0 +/-   10.77       5.6 +/-   10.77  0.080 / 0.170
G31     173.6          45.8                0.3 +/-    1.43       0.4 +/-    1.43  0.090 / 0.190
G32     11.1           66.2                4.2 +/-    0.65       4.5 +/-    0.65  0.070 / 0.160