PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-06:12:50
G10     265.2          36.9               10.3 +/-    1.00      15.8 +/-    1.00  0.190 / 0.330
G13     42.9           19.9                6.0 +/-    0.92      13.3 +/-    0.92  0.170 / 0.400
G15     60.8           49.7                9.7 +/-    0.66      12.3 +/-    0.66  0.040 / 0.040
G16     280.0          12.6                8.7 +/-    0.98      22.9 +/-    0.98  0.040 / 0.040
G20     1.7            67.5                9.0 +/-    0.65       9.6 +/-    0.65  0.110 / 0.130
G21     358.3          70.7                8.6 +/-    0.67       9.1 +/-    0.67  0.120 / 0.130
G24     121.7          13.2                9.7 +/-    1.79      25.1 +/-    1.79  0.120 / 0.270
G27     319.2          18.0                6.9 +/-    1.08      16.0 +/-    1.08  0.150 / 0.230
G29     168.0          33.3               10.2 +/-    0.90      16.8 +/-    0.90  0.050 / 0.050