PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-18:58:10
G08     268.7          18.5               13.1 +/-    1.41      29.9 +/-    1.41  0.090 / 0.240
G10     58.0           59.4                9.2 +/-    0.69      10.5 +/-    0.69  0.090 / 0.240
G11     312.7          15.9               11.0 +/-    1.38      26.8 +/-    1.38  0.100 / 0.400
G14     264.7          65.6               11.9 +/-    0.71      13.0 +/-    0.71  0.170 / 0.470
G18     91.7           35.5                9.5 +/-    0.76      15.0 +/-    0.76  0.050 / 0.120
G21     152.8          11.5               13.4 +/-    1.29      36.2 +/-    1.29  0.060 / 0.090
G24     40.7           11.9                6.9 +/-    1.60      18.5 +/-    1.60  0.120 / 0.130
G27     231.5          16.3               17.3 +/-    1.35      41.7 +/-    1.35  0.140 / 0.200
G31     179.8          27.8               17.7 +/-    1.52      32.6 +/-    1.52  0.040 / 0.050
G32     331.0          74.7               12.1 +/-    0.77      12.5 +/-    0.77  0.030 / 0.040