PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/22-15:12:30
G08     306.1          19.9                3.7 +/-    1.55       8.3 +/-    1.55  0.080 / 0.080
G10     341.3          61.2                3.5 +/-    0.39       3.9 +/-    0.39  0.120 / 0.070
G14     221.4          35.0                6.5 +/-    1.82      10.3 +/-    1.82  0.060 / 0.080
G18     50.5           55.3                4.7 +/-    0.64       5.6 +/-    0.64  0.050 / 0.080
G21     138.6          48.3                6.6 +/-    0.43       8.5 +/-    0.43  0.040 / 0.040
G24     68.9           29.8                5.8 +/-    1.32      10.2 +/-    1.32  0.050 / 0.050
G27     266.6          36.3                7.0 +/-    1.37      10.9 +/-    1.37  0.150 / 0.130
G32     228.8          57.5                5.6 +/-    2.42       6.5 +/-    2.42  0.120 / 0.110