PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/11-21:57:50
G03     222.1          63.7                8.8 +/-    1.13       9.7 +/-    1.13  0.040 / 0.050
G07     251.8          10.9                2.3 +/-   25.53       6.2 +/-   25.53  0.040 / 0.050
G09     306.5          21.9                6.9 +/-    1.54      14.5 +/-    1.54  0.100 / 0.340
G14     104.5          10.8                9.3 +/-    1.93      25.6 +/-    1.93  0.110 / 0.390
G16     119.4          63.0               13.1 +/-    0.65      14.5 +/-    0.65  0.050 / 0.040
G22     191.5          49.2               11.1 +/-    1.43      14.2 +/-    1.43  0.040 / 0.050
G23     324.2          54.0               10.2 +/-    0.90      12.3 +/-    0.90  0.090 / 0.350
G26     61.5           49.0                7.6 +/-    0.58       9.7 +/-    0.58  0.090 / 0.360
G31     55.2           15.8                6.2 +/-    1.11      15.2 +/-    1.11  0.110 / 0.620