PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-17:42:30
G03     218.3          64.6               12.6 +/-    1.31      13.8 +/-    1.31  0.050 / 0.060
G09     305.1          19.9                9.2 +/-    0.89      20.2 +/-    0.89  0.070 / 0.060
G14     102.0          14.0               11.2 +/-    2.55      28.5 +/-    2.55  0.130 / 0.380
G16     119.0          61.6               13.8 +/-    0.43      15.5 +/-    0.43  0.130 / 0.370
G22     189.7          49.8               13.7 +/-    0.79      17.3 +/-    0.79  0.150 / 0.290
G23     324.4          54.1               11.0 +/-    0.49      13.2 +/-    0.49  0.220 / 0.180
G26     62.8           48.9               13.4 +/-    0.76      17.2 +/-    0.76  0.050 / 0.040
G31     54.5           15.8                8.6 +/-    3.13      21.0 +/-    3.13  0.040 / 0.030