PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/18-17:57:50
G08     265.8          18.6                8.9 +/-    1.57      20.2 +/-    1.57  0.150 / 0.460
G10     60.8           58.1               11.2 +/-    0.45      12.9 +/-    0.45  0.110 / 0.440
G11     311.2          17.8                3.8 +/-    1.25       8.7 +/-    1.25  0.030 / 0.040
G14     266.0          66.6               10.3 +/-    0.97      11.2 +/-    0.97  0.030 / 0.040
G18     311.5          34.3                9.8 +/-    2.58      15.7 +/-    2.58  0.090 / 0.250
G20     94.9           36.9               10.8 +/-    0.67      16.6 +/-    0.67  0.090 / 0.230
G21     153.8          13.0                8.5 +/-    3.27      22.1 +/-    3.27  0.060 / 0.050
G27     234.7          17.0                9.2 +/-    2.17      21.8 +/-    2.17  0.060 / 0.060
G31     181.1          26.5               10.4 +/-    3.06      19.6 +/-    3.06  0.140 / 0.310
G32     332.4          74.7               12.5 +/-    0.72      12.9 +/-    0.72  0.110 / 0.210