PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-05:13:10
G10     257.1          31.6                7.7 +/-    2.10      13.0 +/-    2.10  0.130 / 0.330
G13     47.8           25.6                5.9 +/-    0.64      11.3 +/-    0.64  0.130 / 0.300
G15     72.5           54.9                6.3 +/-    0.55       7.6 +/-    0.55  0.140 / 0.330
G16     287.7          14.7                4.2 +/-    1.37      10.6 +/-    1.37  0.160 / 0.330
G20     321.1          69.5                4.6 +/-    0.69       4.8 +/-    0.69  0.090 / 0.120
G21     343.1          65.1                3.5 +/-    0.79       3.8 +/-    0.79  0.100 / 0.120
G26     259.8          12.4                4.6 +/-    7.50      12.2 +/-    7.50  0.050 / 0.060
G27     321.8          11.3               -7.0 +/-   29.04     -19.0 +/-   29.04  0.050 / 0.060
G29     166.8          42.2                9.4 +/-    0.85      13.2 +/-    0.85  0.070 / 0.210