PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/27-04:42:30
G01     88.7           32.1                3.9 +/-    1.01       6.6 +/-    1.01  0.040 / 0.050
G07     126.6          44.1                6.1 +/-    0.35       8.3 +/-    0.35  0.050 / 0.050
G11     68.5           39.5                3.4 +/-    1.62       5.0 +/-    1.62  0.130 / 0.170
G13     294.4          35.5                4.8 +/-    3.86       7.6 +/-    3.86  0.090 / 0.190
G15     314.1          11.0               -5.1 +/-   12.60     -13.9 +/-   12.60  0.040 / 0.040
G17     215.6          55.4                5.0 +/-    1.03       6.0 +/-    1.03  0.060 / 0.050
G19     215.1          29.2                5.6 +/-    2.48      10.1 +/-    2.48  0.100 / 0.180
G28     353.1          61.5                2.9 +/-    0.78       3.2 +/-    0.78  0.080 / 0.080
G30     110.4          72.9                4.1 +/-    0.40       4.2 +/-    0.40  0.060 / 0.080