PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-04:12:30
G10     250.7          26.7               12.1 +/-    1.52      22.8 +/-    1.52  0.130 / 0.630
G13     53.5           30.0                6.5 +/-    1.33      11.3 +/-    1.33  0.140 / 0.550
G15     86.4           57.6                7.6 +/-    0.44       8.8 +/-    0.44  0.030 / 0.050
G16     294.6          15.6                6.5 +/-    2.29      15.9 +/-    2.29  0.030 / 0.050
G20     287.0          63.8                7.0 +/-    0.60       7.7 +/-    0.60  0.110 / 0.130
G21     333.2          59.9                7.7 +/-    0.76       8.8 +/-    0.76  0.110 / 0.150
G26     266.2          15.6               11.5 +/-    2.09      28.2 +/-    2.09  0.060 / 0.180
G29     165.3          50.4                7.8 +/-    0.77       9.7 +/-    0.77  0.060 / 0.210