PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/27-19:13:00
G10     297.3          51.9                7.7 +/-    1.68       9.5 +/-    1.68  0.300 / 0.410
G14     210.0          11.4               -1.9 +/-   22.93      -5.0 +/-   22.93  0.100 / 0.450
G15     46.7           31.5                7.4 +/-    1.19      12.5 +/-    1.19  0.080 / 0.130
G20     351.8          65.4                7.6 +/-    0.36       8.2 +/-    0.36  0.080 / 0.130
G21     97.5           73.2                9.8 +/-    0.46      10.2 +/-    0.46  0.040 / 0.070
G24     94.1           26.0                9.9 +/-    1.22      18.9 +/-    1.22  0.030 / 0.060
G27     302.3          33.0                7.2 +/-    2.17      11.9 +/-    2.17  0.060 / 0.110
G32     210.3          32.0                9.2 +/-    1.16      15.5 +/-    1.16  0.050 / 0.090