PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/07-20:12:50
G01     317.9          20.3                7.5 +/-    3.04      16.4 +/-    3.04  0.170 / 0.220
G08     254.8          11.6                8.9 +/-    9.12      24.0 +/-    9.12  0.230 / 0.320
G10     83.6           52.2                7.2 +/-    1.16       8.8 +/-    1.16  0.280 / 0.330
G11     300.9          24.2                6.7 +/-    1.26      13.3 +/-    1.26  0.050 / 0.050
G14     307.5          71.1                7.0 +/-    0.45       7.4 +/-    0.45  0.050 / 0.060
G18     104.8          25.6                8.1 +/-    2.29      15.5 +/-    2.29  0.030 / 0.020
G22     301.8          11.9                6.2 +/-    7.12      16.6 +/-    7.12  0.030 / 0.020
G25     98.3           9.7               -13.8 +/-   25.81     -38.7 +/-   25.81  0.130 / 0.270
G31     177.4          43.5                9.1 +/-    0.82      12.5 +/-    0.82  0.290 / 0.330
G32     10.3           66.1                7.3 +/-    0.40       7.9 +/-    0.40  0.060 / 0.030