PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/05-18:57:50
G01     321.1          11.0              -12.4 +/-   34.93     -33.7 +/-   34.93  0.220 / 0.470
G08     262.9          17.3               10.8 +/-    1.39      25.5 +/-    1.39  0.190 / 0.450
G10     66.3           56.8                7.1 +/-    0.38       8.3 +/-    0.38  0.040 / 0.050
G11     309.0          19.6                8.9 +/-    1.33      19.9 +/-    1.33  0.050 / 0.040
G14     273.3          68.1                9.4 +/-    0.71      10.0 +/-    0.71  0.040 / 0.040
G20     97.8           34.8                7.7 +/-    0.76      12.2 +/-    0.76  0.030 / 0.040
G21     154.4          10.6                8.6 +/-    5.42      23.8 +/-    5.42  0.140 / 0.370
G27     232.2          14.9               10.6 +/-    1.02      26.5 +/-    1.02  0.150 / 0.380
G31     180.1          30.3               10.9 +/-    1.67      19.0 +/-    1.67  0.150 / 0.330
G32     344.5          73.2                9.2 +/-    0.61       9.6 +/-    0.61  0.140 / 0.380