PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-08:58:00
G01     42.8           18.4                4.4 +/-    2.62      10.0 +/-    2.62  0.040 / 0.060
G06     178.6          33.1                6.9 +/-    1.09      11.4 +/-    1.09  0.040 / 0.050
G13     241.7          24.0                6.9 +/-    1.55      13.9 +/-    1.55  0.190 / 0.280
G15     273.4          13.5                3.5 +/-    1.65       9.1 +/-    1.65  0.170 / 0.330
G17     359.8          71.7                5.3 +/-    0.48       5.5 +/-    0.48  0.030 / 0.020
G19     272.5          68.9                5.2 +/-    0.73       5.6 +/-    0.73  0.030 / 0.020
G24     317.9          15.6                0.9 +/-    2.97       2.2 +/-    2.97  0.090 / 0.240
G28     68.6           47.7                6.0 +/-    1.54       7.7 +/-    1.54  0.130 / 0.250
G30     153.4          29.9                8.6 +/-    1.10      15.1 +/-    1.10  0.170 / 0.180