PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-17:13:10
G10     244.5          20.5               11.0 +/-    1.36      23.9 +/-    1.36  0.100 / 0.230
G13     62.3           34.7               10.1 +/-    0.94      16.1 +/-    0.94  0.110 / 0.210
G15     100.1          57.0               12.8 +/-    0.42      14.9 +/-    0.42  0.040 / 0.060
G16     308.6          12.4                4.7 +/-    1.98      12.4 +/-    1.98  0.060 / 0.060
G18     259.7          52.3               11.5 +/-    0.81      14.1 +/-    0.81  0.050 / 0.050
G20     35.9           56.7               10.0 +/-    0.46      11.7 +/-    0.46  0.040 / 0.060
G21     329.5          57.9               10.1 +/-    0.65      11.7 +/-    0.65  0.040 / 0.130
G26     279.1          17.5                9.1 +/-    1.38      21.3 +/-    1.38  0.050 / 0.130
G29     159.3          52.4               12.5 +/-    0.92      15.4 +/-    0.92  0.180 / 0.390