PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/08-18:58:00
G01     320.0          15.7               12.3 +/-    1.33      30.1 +/-    1.33  0.040 / 0.040
G08     257.8          14.7               12.9 +/-    1.56      32.4 +/-    1.56  0.050 / 0.050
G10     75.6           54.1               14.7 +/-    0.54      17.6 +/-    0.54  0.170 / 0.310
G11     304.5          22.6               12.2 +/-    1.48      25.2 +/-    1.48  0.130 / 0.280
G14     289.1          70.4               14.8 +/-    0.62      15.6 +/-    0.62  0.180 / 0.330
G20     102.9          31.0               17.8 +/-    1.31      30.6 +/-    1.31  0.130 / 0.290
G27     228.1          11.3               12.3 +/-    3.00      33.3 +/-    3.00  0.080 / 0.050
G31     179.3          36.0               17.4 +/-    2.54      27.1 +/-    2.54  0.070 / 0.050
G32     359.4          69.9               15.6 +/-    0.68      16.5 +/-    0.68  0.110 / 0.270