PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/13-02:58:00
G07     35.1           69.0                5.5 +/-    0.69       5.9 +/-    0.69  0.030 / 0.030
G08     55.7           43.0                5.4 +/-    0.88       7.5 +/-    0.88  0.030 / 0.030
G09     177.0          42.7                8.2 +/-    0.94      11.4 +/-    0.94  0.140 / 0.120
G11     124.3          31.1                7.8 +/-    1.18      13.4 +/-    1.18  0.090 / 0.140
G23     161.4          17.2                4.9 +/-    1.33      11.5 +/-    1.33  0.050 / 0.040
G27     39.8           15.8                3.5 +/-    3.06       8.5 +/-    3.06  0.030 / 0.040
G28     262.7          46.5                5.6 +/-    4.53       7.4 +/-    4.53  0.120 / 0.260
G30     322.9          52.9                4.8 +/-    0.68       5.9 +/-    0.68  0.080 / 0.390