PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-21:42:40
G07     326.6          55.4               10.6 +/-    1.15      12.6 +/-    1.15  0.180 / 0.440
G08     110.2          50.8               12.1 +/-    0.72      15.1 +/-    0.72  0.140 / 0.540
G09     205.6          78.5               12.2 +/-    0.84      12.4 +/-    0.84  0.040 / 0.050
G16     45.6           10.9                9.1 +/-    1.75      25.0 +/-    1.75  0.040 / 0.050
G23     153.4          44.3               12.3 +/-    1.17      16.7 +/-    1.17  0.090 / 0.180
G27     58.5           33.1                9.8 +/-    1.09      16.1 +/-    1.09  0.090 / 0.180
G28     234.5          26.9               12.0 +/-    2.27      22.4 +/-    2.27  0.050 / 0.060
G30     300.9          35.7               10.5 +/-    0.82      16.4 +/-    0.82  0.040 / 0.080