PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-21:13:00
G01     320.3          13.7                8.8 +/-    2.36      22.7 +/-    2.36  0.150 / 0.360
G08     261.4          15.6               12.6 +/-    1.35      31.0 +/-    1.35  0.170 / 0.250
G10     70.7           56.5               10.1 +/-    0.71      11.8 +/-    0.71  0.100 / 0.310
G11     307.3          20.7               10.9 +/-    2.74      23.5 +/-    2.74  0.130 / 0.250
G14     283.5          69.5               10.2 +/-    0.36      10.8 +/-    0.36  0.070 / 0.070
G18     97.8           31.5               10.0 +/-    1.23      17.1 +/-    1.23  0.070 / 0.090
G27     226.4          11.6               12.9 +/-    1.90      34.8 +/-    1.90  0.040 / 0.040
G31     179.6          33.9               13.2 +/-    0.80      21.4 +/-    0.80  0.040 / 0.040
G32     350.4          71.6                9.9 +/-    0.74      10.4 +/-    0.74  0.030 / 0.020