PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-04:27:50
G07     314.0          50.0                3.2 +/-    0.85       4.0 +/-    0.85  0.080 / 0.440
G08     120.2          44.6                6.9 +/-    0.87       9.4 +/-    0.87  0.150 / 0.380
G09     274.0          82.8                3.5 +/-    1.15       3.5 +/-    1.15  0.050 / 0.080
G16     42.2           25.6                1.7 +/-    1.04       3.3 +/-    1.04  0.050 / 0.060
G23     148.5          59.5                5.9 +/-    0.68       6.7 +/-    0.68  0.090 / 0.170
G27     71.0           36.3                3.5 +/-    0.61       5.5 +/-    0.61  0.060 / 0.150
G28     227.1          17.8                2.7 +/-    3.66       6.2 +/-    3.66  0.030 / 0.050
G30     290.0          25.6                4.6 +/-    1.78       8.8 +/-    1.78  0.030 / 0.050