PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/23-22:57:50
G01     320.4          13.3                9.8 +/-    1.19      25.4 +/-    1.19  0.060 / 0.100
G08     261.4          15.9               13.1 +/-    2.15      31.9 +/-    2.15  0.090 / 0.100
G10     69.5           56.8               12.1 +/-    0.83      14.2 +/-    0.83  0.110 / 0.270
G11     307.3          20.9               11.6 +/-    4.11      25.0 +/-    4.11  0.100 / 0.280
G14     282.8          69.6               12.8 +/-    0.50      13.6 +/-    0.50  0.100 / 0.400
G18     97.0           32.4               13.7 +/-    0.40      22.8 +/-    0.40  0.110 / 0.330
G27     226.7          12.0               15.4 +/-    3.24      41.0 +/-    3.24  0.050 / 0.060
G31     180.5          32.3               16.5 +/-    1.80      27.7 +/-    1.80  0.040 / 0.050
G32     345.4          72.2               11.5 +/-    0.60      12.0 +/-    0.60  0.020 / 0.030