PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-03:57:50
G08     318.7          12.7                6.4 +/-    1.53      16.8 +/-    1.53  0.140 / 0.210
G10     311.8          56.0                7.8 +/-    1.90       9.2 +/-    1.90  0.110 / 0.290
G14     213.6          17.4                8.2 +/-    1.78      19.3 +/-    1.78  0.070 / 0.060
G15     45.7           21.4                6.8 +/-    2.45      14.4 +/-    2.45  0.040 / 0.060
G20     6.4            64.8                9.8 +/-    0.69      10.7 +/-    0.69  0.030 / 0.040
G21     118.7          68.1                9.5 +/-    0.92      10.1 +/-    0.92  0.040 / 0.030
G24     86.1           29.0                8.0 +/-    1.12      14.4 +/-    1.12  0.120 / 0.200
G27     289.4          37.1               11.3 +/-    1.83      17.3 +/-    1.83  0.110 / 0.230
G32     214.9          43.1                9.5 +/-    0.90      13.2 +/-    0.90  0.190 / 0.170