PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/09-18:27:50
G08     268.8          19.9                9.3 +/-    1.90      20.4 +/-    1.90  0.110 / 0.250
G10     54.9           59.3                9.8 +/-    0.69      11.2 +/-    0.69  0.110 / 0.240
G11     313.2          15.8               10.2 +/-    3.63      24.8 +/-    3.63  0.030 / 0.040
G14     259.2          64.5                9.9 +/-    0.61      10.8 +/-    0.61  0.030 / 0.030
G20     91.7           39.0               11.6 +/-    0.49      17.1 +/-    0.49  0.050 / 0.060
G21     153.4          16.3               11.1 +/-    3.05      26.8 +/-    3.05  0.050 / 0.060
G27     237.0          19.0               11.3 +/-    0.99      25.6 +/-    0.99  0.100 / 0.250
G31     181.3          23.8               12.5 +/-    1.54      25.2 +/-    1.54  0.090 / 0.250
G32     321.1          75.6               11.7 +/-    0.65      12.0 +/-    0.65  0.160 / 0.240