PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/18-18:12:50
G01     320.4          14.2                7.1 +/-    1.11      18.1 +/-    1.11  0.100 / 0.290
G08     259.5          15.6                7.7 +/-    2.26      18.9 +/-    2.26  0.200 / 0.340
G10     72.7           55.0               11.8 +/-    0.49      14.1 +/-    0.49  0.030 / 0.040
G11     306.1          21.7                2.8 +/-    1.89       6.0 +/-    1.89  0.030 / 0.040
G14     283.8          69.9               12.2 +/-    0.80      12.9 +/-    0.80  0.070 / 0.240
G18     306.8          39.8               11.0 +/-    1.18      16.1 +/-    1.18  0.070 / 0.260
G20     101.3          32.3               11.5 +/-    0.71      19.2 +/-    0.71  0.070 / 0.050
G27     229.6          12.5               10.0 +/-    3.85      26.3 +/-    3.85  0.080 / 0.050
G31     180.0          33.6               12.8 +/-    2.04      20.8 +/-    2.04  0.140 / 0.370
G32     354.0          71.2               12.1 +/-    0.69      12.7 +/-    0.69  0.130 / 0.440