PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-15:42:30
G01     320.2          14.1                4.4 +/-    1.36      11.3 +/-    1.36  0.040 / 0.050
G08     263.5          15.2                6.6 +/-    1.81      16.3 +/-    1.81  0.030 / 0.050
G10     72.0           56.0                6.3 +/-    0.60       7.4 +/-    0.60  0.150 / 0.300
G11     308.7          19.1                7.2 +/-    1.91      16.3 +/-    1.91  0.130 / 0.380
G14     280.9          68.3                7.2 +/-    0.52       7.7 +/-    0.52  0.050 / 0.090
G27     226.3          11.3                5.3 +/-    3.73      14.3 +/-    3.73  0.050 / 0.080
G31     176.8          37.4               10.3 +/-    0.94      15.7 +/-    0.94  0.140 / 0.270
G32     359.0          70.2                6.9 +/-    0.99       7.2 +/-    0.99  0.190 / 0.310