PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-02:57:40
G08     302.3          21.7                7.9 +/-    1.35      16.8 +/-    1.35  0.060 / 0.100
G10     348.0          62.0                7.1 +/-    0.59       7.9 +/-    0.59  0.070 / 0.110
G14     222.9          36.0               15.6 +/-    2.11      24.3 +/-    2.11  0.050 / 0.150
G20     14.7           65.3                8.3 +/-    0.48       9.1 +/-    0.48  0.060 / 0.170
G21     141.1          50.4               11.3 +/-    0.75      14.2 +/-    0.75  0.040 / 0.030
G24     63.9           28.0                6.9 +/-    0.72      12.5 +/-    0.72  0.030 / 0.030
G27     264.9          35.5               12.5 +/-    1.52      19.7 +/-    1.52  0.070 / 0.100
G32     232.0          61.9               11.0 +/-    0.85      12.4 +/-    0.85  0.070 / 0.090