PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-19:42:40
G01     316.6          22.7                4.9 +/-    1.58      10.1 +/-    1.58  0.090 / 0.240
G08     252.5          10.0                9.0 +/-    3.83      25.1 +/-    3.83  0.090 / 0.230
G10     88.1           50.3                8.3 +/-    0.90      10.5 +/-    0.90  0.080 / 0.160
G11     298.1          25.2                8.6 +/-    1.26      16.6 +/-    1.26  0.100 / 0.150
G14     316.8          71.1                6.4 +/-    0.66       6.7 +/-    0.66  0.150 / 0.440
G18     107.4          23.3                8.8 +/-    1.11      18.0 +/-    1.11  0.140 / 0.440
G22     303.4          14.3                7.6 +/-    2.17      19.3 +/-    2.17  0.040 / 0.040
G25     95.7           11.1               10.0 +/-    2.34      27.2 +/-    2.34  0.040 / 0.030
G31     176.3          47.3                9.4 +/-    1.49      12.3 +/-    1.49  0.040 / 0.090
G32     16.1           63.7                5.0 +/-    0.60       5.6 +/-    0.60  0.030 / 0.070