PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-00:42:30
G07     326.0          55.7                5.2 +/-    0.91       6.2 +/-    0.91  0.030 / 0.050
G08     106.9          48.8               10.7 +/-    1.19      13.7 +/-    1.19  0.040 / 0.050
G09     201.5          80.1                7.1 +/-    1.47       7.2 +/-    1.47  0.080 / 0.220
G16     44.5           14.3                3.0 +/-    2.30       7.5 +/-    2.30  0.080 / 0.200
G23     153.5          52.1                9.1 +/-    0.50      11.2 +/-    0.50  0.150 / 0.410
G27     65.9           36.7                5.9 +/-    0.48       9.0 +/-    0.48  0.130 / 0.290
G28     231.2          21.2                7.5 +/-    1.46      16.1 +/-    1.46  0.050 / 0.060
G30     295.3          29.2                4.2 +/-    1.26       7.5 +/-    1.26  0.060 / 0.080