PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-17:42:40
G10     255.3          29.7               11.8 +/-    2.07      20.8 +/-    2.07  0.130 / 0.370
G13     49.8           27.9                8.8 +/-    0.96      16.1 +/-    0.96  0.160 / 0.310
G15     74.5           54.9               11.6 +/-    0.34      13.8 +/-    0.34  0.130 / 0.270
G16     296.2          13.0                4.7 +/-    1.61      12.1 +/-    1.61  0.110 / 0.330
G18     279.7          60.3               12.0 +/-    1.12      13.6 +/-    1.12  0.040 / 0.070
G20     45.5           45.4                9.5 +/-    0.58      12.8 +/-    0.58  0.040 / 0.070
G21     348.2          66.5               10.0 +/-    0.69      10.8 +/-    0.69  0.040 / 0.050
G26     266.7          13.1               10.8 +/-    2.51      28.1 +/-    2.51  0.050 / 0.050
G27     321.9          10.7               -9.9 +/-   32.40     -27.2 +/-   32.40  0.070 / 0.170
G29     163.5          38.0               14.7 +/-    0.88      22.1 +/-    0.88  0.080 / 0.190