PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-19:42:40
G03     246.1          70.3               11.2 +/-    1.06      11.8 +/-    1.06  0.120 / 0.260
G09     300.2          13.6                8.7 +/-    3.04      22.3 +/-    3.04  0.130 / 0.300
G14     95.5           18.5               10.4 +/-    1.11      23.7 +/-    1.11  0.070 / 0.060
G16     136.8          54.9               12.0 +/-    0.70      14.3 +/-    0.70  0.050 / 0.060
G22     197.5          60.1               12.4 +/-    0.82      14.0 +/-    0.82  0.070 / 0.140
G23     316.1          46.1                9.4 +/-    0.94      12.5 +/-    0.94  0.080 / 0.140
G26     77.0           53.5                8.9 +/-    0.46      10.8 +/-    0.46  0.040 / 0.050
G31     49.8           23.2                7.6 +/-    0.55      15.5 +/-    0.55  0.030 / 0.050