PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-01:28:00
G10     255.1          30.3               12.5 +/-    0.64      21.8 +/-    0.64  0.150 / 0.590
G13     49.3           26.8                9.3 +/-    1.10      17.4 +/-    1.10  0.180 / 0.440
G15     79.2           57.3               10.5 +/-    0.56      12.2 +/-    0.56  0.050 / 0.050
G16     289.3          15.3                6.7 +/-    2.57      16.6 +/-    2.57  0.040 / 0.060
G20     268.9          44.8               11.3 +/-    0.94      15.3 +/-    0.94  0.090 / 0.130
G21     339.1          63.2               10.1 +/-    0.53      11.1 +/-    0.53  0.090 / 0.130
G26     261.6          13.5               10.0 +/-    0.96      25.9 +/-    0.96  0.050 / 0.060
G29     166.5          45.2               12.6 +/-    0.89      17.0 +/-    0.89  0.040 / 0.060