PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-08:58:00
G08     269.4          17.5                6.7 +/-    1.29      15.6 +/-    1.29  0.040 / 0.070
G10     62.6           58.2                3.7 +/-    0.44       4.3 +/-    0.44  0.040 / 0.070
G11     311.8          16.7               -3.0 +/-   11.66      -7.1 +/-   11.66  0.130 / 0.200
G14     262.9          62.5                4.8 +/-    0.59       5.3 +/-    0.59  0.150 / 0.200
G18     312.3          31.7                5.2 +/-    2.67       8.7 +/-    2.67  0.130 / 0.330
G20     104.0          16.1                4.6 +/-    1.16      11.2 +/-    1.16  0.120 / 0.230
G21     154.9          14.8                5.2 +/-    1.88      13.1 +/-    1.88  0.030 / 0.030
G27     230.8          15.1                6.0 +/-    1.49      14.9 +/-    1.49  0.030 / 0.030
G31     176.5          33.1                5.4 +/-    1.35       8.8 +/-    1.35  0.120 / 0.310
G32     348.4          73.2                4.6 +/-    0.69       4.8 +/-    0.69  0.130 / 0.420