PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-01:12:30
G07     352.8          63.9                6.5 +/-    0.69       7.1 +/-    0.69  0.040 / 0.130
G08     79.7           52.5                6.2 +/-    1.70       7.6 +/-    1.70  0.040 / 0.110
G09     183.8          61.8               11.2 +/-    0.68      12.5 +/-    0.68  0.030 / 0.040
G11     139.3          19.9                8.6 +/-    1.83      19.0 +/-    1.83  0.040 / 0.030
G23     158.6          29.6                9.5 +/-    1.58      16.7 +/-    1.58  0.030 / 0.040
G27     45.3           23.8                3.6 +/-    2.56       7.2 +/-    2.56  0.040 / 0.040
G28     248.2          39.1                9.0 +/-    0.64      13.3 +/-    0.64  0.030 / 0.030
G30     313.7          45.6                6.5 +/-    0.72       8.7 +/-    0.72  0.030 / 0.040