PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-06:12:50
G10     269.1          39.2                4.5 +/-    1.43       6.6 +/-    1.43  0.170 / 0.290
G13     41.1           17.0                4.3 +/-    1.67      10.3 +/-    1.67  0.120 / 0.260
G15     57.0           47.0                5.7 +/-    0.84       7.5 +/-    0.84  0.030 / 0.040
G16     276.6          11.4                2.2 +/-    6.59       6.0 +/-    6.59  0.030 / 0.040
G20     7.2            66.2                5.2 +/-    0.46       5.6 +/-    0.46  0.040 / 0.030
G21     7.2            73.0                5.6 +/-    1.21       5.9 +/-    1.21  0.040 / 0.030
G24     118.6          15.3                7.5 +/-    1.42      18.5 +/-    1.42  0.140 / 0.220
G27     317.5          20.8                3.2 +/-    2.76       6.8 +/-    2.76  0.120 / 0.220
G29     168.4          29.4                5.9 +/-    0.80      10.5 +/-    0.80  0.300 / 0.230
G32     204.2          12.4                3.8 +/-   11.45      10.2 +/-   11.45  0.140 / 0.230