PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-23:27:30
G08     294.3          23.4                9.8 +/-    1.10      19.8 +/-    1.10  0.040 / 0.060
G10     3.5            62.9                9.1 +/-    1.03      10.1 +/-    1.03  0.040 / 0.080
G14     227.9          43.7               12.2 +/-    2.44      16.8 +/-    2.44  0.120 / 0.130
G20     62.3           53.4               10.3 +/-    0.78      12.5 +/-    0.78  0.090 / 0.120
G21     145.5          42.5               12.4 +/-    0.70      17.4 +/-    0.70  0.050 / 0.090
G24     56.0           24.8                9.8 +/-    2.20      19.3 +/-    2.20  0.050 / 0.110
G27     257.8          32.7               10.2 +/-    2.17      17.0 +/-    2.17  0.030 / 0.020
G32     242.8          67.3               10.5 +/-    0.54      11.2 +/-    0.54  0.030 / 0.030