PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-14:27:40
G01     321.0          10.5              -17.6 +/-   20.89     -48.6 +/-   20.89  0.060 / 0.090
G08     268.3          17.0                5.4 +/-    1.58      12.8 +/-    1.58  0.060 / 0.070
G10     64.5           57.9                6.5 +/-    0.55       7.5 +/-    0.55  0.110 / 0.320
G11     312.1          16.1                4.4 +/-    2.09      10.7 +/-    2.09  0.190 / 0.380
G14     269.3          65.8                6.4 +/-    0.73       6.9 +/-    0.73  0.040 / 0.060
G21     154.3          11.5                7.8 +/-    2.39      21.1 +/-    2.39  0.040 / 0.060
G27     229.4          14.2                6.5 +/-    3.04      16.4 +/-    3.04  0.230 / 0.230
G31     177.3          33.2                8.4 +/-    1.53      13.8 +/-    1.53  0.230 / 0.330
G32     348.5          72.8                7.2 +/-    0.80       7.5 +/-    0.80  0.120 / 0.420