PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-20:13:10
G01     319.7          16.5                9.2 +/-    2.54      22.1 +/-    2.54  0.160 / 0.260
G08     257.0          14.2               10.2 +/-    1.64      25.8 +/-    1.64  0.150 / 0.330
G10     77.3           53.6                9.3 +/-    0.96      11.2 +/-    0.96  0.040 / 0.050
G11     303.7          23.1                8.6 +/-    1.13      17.6 +/-    1.13  0.040 / 0.050
G14     291.8          70.6               10.1 +/-    0.49      10.7 +/-    0.49  0.120 / 0.280
G20     103.8          30.3               11.2 +/-    0.75      19.6 +/-    0.75  0.130 / 0.310
G27     227.1          10.5               10.5 +/-    3.07      28.9 +/-    3.07  0.150 / 0.310
G31     178.3          38.0               10.8 +/-    1.98      16.3 +/-    1.98  0.140 / 0.260
G32     3.1            68.9               10.5 +/-    0.92      11.2 +/-    0.92  0.060 / 0.080