PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-04:27:50
G08     295.6          22.5                9.0 +/-    1.99      18.7 +/-    1.99  0.070 / 0.110
G10     3.9            62.9                5.7 +/-    1.14       6.4 +/-    1.14  0.070 / 0.090
G14     228.3          42.0                9.4 +/-    1.91      13.2 +/-    1.91  0.060 / 0.100
G20     53.0           58.6                7.8 +/-    0.88       9.0 +/-    0.88  0.060 / 0.090
G21     145.8          42.8                7.5 +/-    0.92      10.4 +/-    0.92  0.050 / 0.070
G24     56.8           25.6                7.2 +/-    2.48      13.9 +/-    2.48  0.060 / 0.080
G27     256.1          32.4                8.1 +/-    2.35      13.5 +/-    2.35  0.120 / 0.180
G32     244.4          68.4                6.9 +/-    0.66       7.3 +/-    0.66  0.110 / 0.160