PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-16:28:10
G01     320.1          14.5                4.9 +/-    2.11      12.4 +/-    2.11  0.160 / 0.320
G08     262.6          15.0                6.1 +/-    1.50      15.3 +/-    1.50  0.220 / 0.260
G10     72.7           55.8                7.2 +/-    0.53       8.5 +/-    0.53  0.030 / 0.040
G11     308.0          19.6                5.1 +/-    0.76      11.4 +/-    0.76  0.030 / 0.040
G14     282.8          68.8                7.4 +/-    0.58       7.8 +/-    0.58  0.080 / 0.060
G27     225.9          11.0                8.4 +/-    1.49      22.8 +/-    1.49  0.060 / 0.070
G31     177.0          37.6               10.4 +/-    1.14      15.7 +/-    1.14  0.110 / 0.210
G32     359.4          70.0                7.0 +/-    0.29       7.4 +/-    0.29  0.190 / 0.280