PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/11-09:27:50
G08     316.5          13.8                2.2 +/-    2.17       5.6 +/-    2.17  0.280 / 0.190
G10     323.0          58.4                4.0 +/-    0.69       4.6 +/-    0.69  0.200 / 0.300
G14     216.3          23.4                6.0 +/-    1.58      12.1 +/-    1.58  0.070 / 0.060
G15     46.1           13.6                2.1 +/-    1.93       5.4 +/-    1.93  0.050 / 0.070
G20     72.8           30.0                5.0 +/-    1.32       8.7 +/-    1.32  0.040 / 0.040
G21     129.3          60.9                5.8 +/-    0.28       6.6 +/-    0.28  0.030 / 0.040
G24     79.5           30.1                7.0 +/-    1.51      12.1 +/-    1.51  0.090 / 0.090
G27     280.0          37.9                5.0 +/-    1.38       7.6 +/-    1.38  0.070 / 0.080
G32     219.6          49.4                4.9 +/-    1.88       6.3 +/-    1.88  0.080 / 0.110