PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-18:42:30
G07     326.3          55.3               15.0 +/-    0.56      17.8 +/-    0.56  0.040 / 0.040
G08     113.2          50.8               17.6 +/-    0.51      22.0 +/-    0.51  0.040 / 0.040
G09     204.0          78.3               15.5 +/-    0.32      15.7 +/-    0.32  0.050 / 0.060
G11     150.0          10.0               -1.5 +/-   25.49      -4.3 +/-   25.49  0.050 / 0.070
G16     45.8           9.6                12.3 +/-    2.70      34.7 +/-    2.70  0.160 / 0.630
G23     152.7          42.1               16.0 +/-    0.79      22.5 +/-    0.79  0.150 / 0.300
G27     58.7           33.3               14.5 +/-    1.22      23.7 +/-    1.22  0.080 / 0.110
G28     234.4          26.7               18.9 +/-    1.58      35.5 +/-    1.58  0.110 / 0.090
G30     299.9          34.1               12.9 +/-    1.80      20.8 +/-    1.80  0.050 / 0.050