PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-03:58:00
G08     301.6          21.6                8.4 +/-    1.70      17.8 +/-    1.70  0.060 / 0.080
G10     350.5          62.2                7.0 +/-    0.47       7.8 +/-    0.47  0.070 / 0.100
G14     223.7          36.6               14.2 +/-    1.66      21.9 +/-    1.66  0.060 / 0.130
G20     36.8           62.4                8.0 +/-    0.48       8.9 +/-    0.48  0.060 / 0.150
G21     142.0          49.0               10.0 +/-    1.34      12.7 +/-    1.34  0.030 / 0.030
G24     62.8           27.8                5.7 +/-    0.91      10.5 +/-    0.91  0.030 / 0.030
G27     263.3          35.0               12.6 +/-    1.16      19.9 +/-    1.16  0.040 / 0.070
G32     233.8          63.0               11.3 +/-    0.94      12.5 +/-    0.94  0.040 / 0.070