PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-08:42:30
G03     206.8          48.7                4.2 +/-    2.07       5.3 +/-    2.07  0.110 / 0.120
G07     267.0          24.4                5.4 +/-    1.16      10.7 +/-    1.16  0.080 / 0.130
G09     316.6          40.5                4.2 +/-    0.80       6.1 +/-    0.80  0.030 / 0.040
G16     70.7           63.2                6.5 +/-    0.54       7.2 +/-    0.54  0.030 / 0.070
G22     184.5          30.8                4.5 +/-    1.42       7.8 +/-    1.42  0.070 / 0.110
G23     339.3          68.1                2.7 +/-    1.02       2.9 +/-    1.02  0.060 / 0.110
G26     47.3           36.5                2.6 +/-    0.66       4.1 +/-    0.66  0.040 / 0.040
G27     124.3          18.5                4.4 +/-    1.76      10.0 +/-    1.76  0.040 / 0.040