PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-03:42:30
G07     356.6          64.7                3.5 +/-    1.08       3.9 +/-    1.08  0.120 / 0.120
G08     75.9           51.4                4.3 +/-    1.10       5.3 +/-    1.10  0.050 / 0.120
G09     182.4          59.9                6.4 +/-    0.42       7.3 +/-    0.42  0.040 / 0.040
G11     137.2          21.0                7.0 +/-    2.85      15.1 +/-    2.85  0.040 / 0.040
G23     159.1          29.2                6.4 +/-    1.97      11.4 +/-    1.97  0.130 / 0.100
G27     44.5           22.8                2.5 +/-    2.02       5.1 +/-    2.02  0.090 / 0.160
G28     249.6          40.1                5.2 +/-    1.51       7.5 +/-    1.51  0.040 / 0.030
G30     313.6          45.1                3.9 +/-    0.54       5.3 +/-    0.54  0.030 / 0.030