PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-09:42:40
G03     237.4          66.4               -0.5 +/-   11.47      -0.5 +/-   11.47  0.180 / 0.190
G07     250.5          11.9               -0.3 +/-   11.15      -0.9 +/-   11.15  0.140 / 0.160
G09     305.9          22.3                4.8 +/-    2.05      10.1 +/-    2.05  0.050 / 0.060
G14     102.9          10.8                2.2 +/-    3.06       6.0 +/-    3.06  0.050 / 0.050
G16     122.3          61.4               10.3 +/-   11.65      11.5 +/-   11.65  0.040 / 0.040
G22     191.0          51.7                4.7 +/-    0.41       5.8 +/-    0.41  0.050 / 0.050
G23     320.7          50.3                3.1 +/-    1.09       3.9 +/-    1.09  0.110 / 0.180
G26     65.9           51.1              -21.0 +/-   61.53     -26.1 +/-   61.53  0.190 / 0.250
G31     53.7           17.3                5.7 +/-   13.82      13.3 +/-   13.82  0.170 / 0.380