PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/04-04:13:00
G10     264.6          36.6                9.4 +/-    1.45      14.4 +/-    1.45  0.140 / 0.380
G13     43.1           20.1                6.9 +/-    2.74      15.2 +/-    2.74  0.150 / 0.330
G15     62.2           50.9                6.7 +/-    0.92       8.4 +/-    0.92  0.050 / 0.040
G16     280.2          12.9                8.2 +/-    2.17      21.5 +/-    2.17  0.040 / 0.040
G20     312.4          66.0                7.2 +/-    0.61       7.8 +/-    0.61  0.170 / 0.230
G21     356.0          70.1                8.0 +/-    0.61       8.4 +/-    0.61  0.200 / 0.170
G24     121.7          12.9                7.8 +/-    2.25      20.3 +/-    2.25  0.150 / 0.380
G27     319.5          17.3                8.8 +/-    1.55      20.7 +/-    1.55  0.230 / 0.310
G29     168.1          34.3               10.1 +/-    1.50      16.2 +/-    1.50  0.200 / 0.260