PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-03:58:00
G01     68.2           32.6                3.7 +/-    1.07       6.1 +/-    1.07  0.040 / 0.050
G07     138.7          28.9                6.4 +/-    1.19      11.5 +/-    1.19  0.030 / 0.050
G11     53.3           30.3                3.9 +/-    1.15       6.8 +/-    1.15  0.070 / 0.120
G13     272.9          36.8                5.3 +/-    1.06       8.2 +/-    1.06  0.050 / 0.110
G15     299.9          16.2                2.2 +/-    2.06       5.3 +/-    2.06  0.140 / 0.280
G17     238.1          70.8                6.7 +/-    1.05       7.1 +/-    1.05  0.100 / 0.310
G19     226.1          45.0                6.4 +/-    0.91       8.6 +/-    0.91  0.030 / 0.040
G28     24.8           58.4                3.9 +/-    0.66       4.5 +/-    0.66  0.030 / 0.040
G30     137.2          56.4                6.8 +/-    0.72       8.0 +/-    0.72  0.040 / 0.070