PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-06:43:10
G10     244.6          21.1                6.1 +/-    3.82      13.1 +/-    3.82  0.090 / 0.340
G13     61.3           33.8                4.5 +/-    1.21       7.2 +/-    1.21  0.120 / 0.320
G15     100.2          57.2                5.9 +/-    0.48       6.8 +/-    0.48  0.050 / 0.030
G16     302.7          15.2                1.8 +/-    1.84       4.5 +/-    1.84  0.040 / 0.040
G20     331.7          74.1                5.3 +/-    0.36       5.4 +/-    0.36  0.040 / 0.050
G21     325.5          55.3                4.2 +/-    0.56       5.0 +/-    0.56  0.040 / 0.050
G26     273.9          18.3                4.3 +/-    2.34       9.8 +/-    2.34  0.050 / 0.020
G29     162.5          58.3                6.0 +/-    0.53       6.9 +/-    0.53  0.040 / 0.020