PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/09-18:42:50
G01     321.0          11.5               -5.5 +/-   39.17     -14.8 +/-   39.17  0.030 / 0.030
G08     262.3          17.0               11.5 +/-    1.55      27.1 +/-    1.55  0.030 / 0.030
G10     67.4           56.5                9.7 +/-    0.67      11.4 +/-    0.67  0.050 / 0.050
G11     308.5          20.0               10.7 +/-    1.51      23.5 +/-    1.51  0.060 / 0.050
G14     275.0          68.5               10.9 +/-    0.61      11.6 +/-    0.61  0.160 / 0.320
G20     98.4           34.4               10.8 +/-    0.67      17.3 +/-    0.67  0.150 / 0.450
G27     231.8          14.5               11.0 +/-    1.12      27.8 +/-    1.12  0.140 / 0.290
G31     180.2          30.7               14.6 +/-    1.87      25.2 +/-    1.87  0.140 / 0.360
G32     346.0          72.9               10.8 +/-    0.69      11.2 +/-    0.69  0.120 / 0.200