PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/23-14:58:00
G05     47.0           22.8                3.6 +/-    0.48       7.4 +/-    0.48  0.120 / 0.350
G13     81.1           36.1                7.5 +/-    0.39      11.6 +/-    0.39  0.140 / 0.310
G15     133.8          48.9                8.8 +/-    0.89      11.2 +/-    0.89  0.130 / 0.440
G16     318.4          10.2               -7.6 +/-    6.45     -21.0 +/-    6.45  0.030 / 0.020
G20     244.3          33.6                9.0 +/-    1.51      14.7 +/-    1.51  0.020 / 0.020
G21     311.0          45.9                7.1 +/-    0.93       9.5 +/-    0.93  0.060 / 0.140
G25     197.5          12.0                7.1 +/-    2.12      19.0 +/-    2.12  0.060 / 0.160
G26     293.8          19.7                6.9 +/-    2.43      15.3 +/-    2.43  0.060 / 0.090
G29     148.5          76.5                8.5 +/-    0.63       8.8 +/-    0.63  0.050 / 0.080