PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-04:42:50
G07     327.8          55.9                3.2 +/-    1.27       3.8 +/-    1.27  0.070 / 0.200
G08     105.0          50.2                7.3 +/-    1.14       9.2 +/-    1.14  0.070 / 0.210
G09     200.6          78.3                4.8 +/-    0.65       4.9 +/-    0.65  0.120 / 0.410
G11     148.3          10.0               -7.4 +/-   12.40     -20.6 +/-   12.40  0.150 / 0.470
G16     44.7           16.1                2.7 +/-    1.40       6.5 +/-    1.40  0.040 / 0.060
G23     154.2          48.0                7.9 +/-    1.06      10.2 +/-    1.06  0.040 / 0.050
G27     58.7           33.0                4.3 +/-    1.05       7.2 +/-    1.05  0.030 / 0.060
G28     234.1          26.6                5.6 +/-    1.63      10.6 +/-    1.63  0.040 / 0.050
G30     298.5          32.4                2.0 +/-    1.36       3.4 +/-    1.36  0.020 / 0.030