PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-19:42:50
G03     246.1          70.3               10.6 +/-    0.63      11.1 +/-    0.63  0.050 / 0.040
G09     300.2          13.6                9.8 +/-    1.73      25.1 +/-    1.73  0.050 / 0.040
G14     95.5           18.5                9.8 +/-    2.20      22.4 +/-    2.20  0.070 / 0.150
G16     136.8          54.9               10.6 +/-    0.83      12.7 +/-    0.83  0.090 / 0.190
G22     197.5          60.1               11.6 +/-    0.59      13.1 +/-    0.59  0.030 / 0.040
G23     316.1          46.1               10.4 +/-    0.49      13.9 +/-    0.49  0.030 / 0.040
G26     77.0           53.5                9.0 +/-    0.78      10.8 +/-    0.78  0.110 / 0.240
G31     49.8           23.2                7.1 +/-    1.76      14.4 +/-    1.76  0.110 / 0.300