PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-04:58:10
G10     252.7          28.2               11.4 +/-    1.49      20.7 +/-    1.49  0.110 / 0.250
G13     51.6           28.7                7.1 +/-    1.42      12.9 +/-    1.42  0.110 / 0.280
G15     81.4           56.8                8.2 +/-    1.04       9.6 +/-    1.04  0.030 / 0.040
G16     292.5          15.4                7.9 +/-    1.50      19.4 +/-    1.50  0.040 / 0.040
G20     305.0          68.6                8.2 +/-    0.56       8.8 +/-    0.56  0.060 / 0.140
G21     336.3          61.6                7.0 +/-    0.76       7.9 +/-    0.76  0.090 / 0.150
G26     264.2          14.6               11.0 +/-    1.18      27.5 +/-    1.18  0.040 / 0.030
G29     165.8          47.7                8.1 +/-    0.62      10.5 +/-    0.62  0.040 / 0.040