PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/17-13:13:10
G02     70.3           23.0                3.0 +/-    0.88       6.1 +/-    0.88  0.030 / 0.050
G05     47.6           52.7                2.7 +/-    0.61       3.3 +/-    0.61  0.030 / 0.040
G12     179.2          17.5                4.2 +/-    1.80       9.8 +/-    1.80  0.060 / 0.130
G13     115.8          23.0                6.8 +/-    1.30      14.0 +/-    1.30  0.060 / 0.110
G15     154.5          24.1                5.9 +/-    1.52      11.7 +/-    1.52  0.090 / 0.260
G20     225.0          11.0               -2.7 +/-   19.11      -7.5 +/-   19.11  0.070 / 0.200
G21     282.3          25.0                8.9 +/-    1.61      17.4 +/-    1.61  0.080 / 0.210
G25     221.9          42.2                5.7 +/-    1.56       8.1 +/-    1.56  0.090 / 0.210
G29     336.8          65.9                2.6 +/-    1.12       2.9 +/-    1.12  0.030 / 0.030