PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-03:42:50
G05     51.4           10.7                6.1 +/-    1.78      16.7 +/-    1.78  0.090 / 0.400
G10     240.3          17.0               13.1 +/-    1.51      31.1 +/-    1.51  0.100 / 0.450
G13     68.0           35.5                8.2 +/-    0.54      13.0 +/-    0.54  0.060 / 0.060
G15     114.0          55.7               10.6 +/-    0.43      12.5 +/-    0.43  0.050 / 0.090
G16     307.7          14.6                8.1 +/-    1.80      20.3 +/-    1.80  0.110 / 0.300
G20     262.5          55.8               13.6 +/-    0.75      16.0 +/-    0.75  0.100 / 0.340
G21     318.7          50.7               10.4 +/-    0.66      13.0 +/-    0.66  0.110 / 0.290
G26     279.5          19.9               10.8 +/-    1.50      23.8 +/-    1.50  0.120 / 0.330
G29     160.3          65.9               10.1 +/-    1.25      11.0 +/-    1.25  0.050 / 0.120