PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-14:43:10
G05     50.1           14.3                6.8 +/-    2.33      17.1 +/-    2.33  0.070 / 0.160
G10     238.5          14.3                6.7 +/-    1.87      17.1 +/-    1.87  0.100 / 0.250
G13     72.5           36.8                9.6 +/-    0.72      14.7 +/-    0.72  0.080 / 0.150
G15     115.7          54.2               11.1 +/-    0.52      13.3 +/-    0.52  0.090 / 0.160
G16     314.7          11.2                3.1 +/-    5.35       8.4 +/-    5.35  0.050 / 0.060
G18     249.9          46.8               10.6 +/-    4.29      14.0 +/-    4.29  0.040 / 0.060
G20     26.9           65.7                8.2 +/-    0.32       8.9 +/-    0.32  0.170 / 0.390
G21     321.9          53.7                9.5 +/-    0.58      11.4 +/-    0.58  0.310 / 0.370
G26     286.2          19.4                7.9 +/-    0.91      17.6 +/-    0.91  0.080 / 0.350
G29     155.6          63.8               11.0 +/-    0.33      12.1 +/-    0.33  0.100 / 0.170