PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-00:57:50
G01     318.5          20.6                9.3 +/-    2.24      20.1 +/-    2.24  0.140 / 0.250
G08     260.1          12.9               12.3 +/-    2.06      32.1 +/-    2.06  0.120 / 0.240
G10     82.6           50.8               10.7 +/-    0.85      13.3 +/-    0.85  0.040 / 0.070
G11     303.0          22.5                9.7 +/-    1.65      20.1 +/-    1.65  0.040 / 0.060
G14     294.7          70.1               10.2 +/-    0.87      10.8 +/-    0.87  0.090 / 0.280
G18     303.4          41.9               11.1 +/-    0.71      15.6 +/-    0.71  0.070 / 0.220
G20     106.8          27.6                9.0 +/-    2.00      16.6 +/-    2.00  0.220 / 0.360
G31     174.0          44.4               13.4 +/-    0.83      18.3 +/-    0.83  0.220 / 0.490
G32     9.7            66.8                7.8 +/-    0.48       8.4 +/-    0.48  0.070 / 0.100