PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-16:57:20
G02     207.9          43.2               14.0 +/-    1.22      19.4 +/-    1.22  0.130 / 0.190
G06     126.4          78.5               12.0 +/-    0.61      12.2 +/-    0.61  0.080 / 0.170
G12     313.6          24.7               12.1 +/-    2.69      23.8 +/-    2.69  0.060 / 0.080
G17     48.2           39.0               10.0 +/-    0.41      14.7 +/-    0.41  0.050 / 0.080
G19     25.1           56.7               10.9 +/-    1.07      12.8 +/-    1.07  0.040 / 0.070
G24     286.6          41.2               10.2 +/-    1.28      14.6 +/-    1.28  0.030 / 0.060
G28     112.9          23.2               10.2 +/-    0.97      20.8 +/-    0.97  0.020 / 0.030