PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/19-15:43:10
G10     266.0          39.2                9.0 +/-    1.12      13.3 +/-    1.12  0.130 / 0.230
G13     42.1           18.1                6.4 +/-    2.72      14.7 +/-    2.72  0.240 / 0.150
G15     58.5           47.3                8.4 +/-    0.63      11.0 +/-    0.63  0.130 / 0.430
G16     279.5          13.2                5.6 +/-    1.35      14.7 +/-    1.35  0.130 / 0.310
G20     299.9          61.5                9.3 +/-    0.56      10.4 +/-    0.56  0.050 / 0.080
G21     1.1            70.8                8.3 +/-    0.65       8.8 +/-    0.65  0.050 / 0.110
G24     123.4          13.2               11.9 +/-    2.74      30.9 +/-    2.74  0.050 / 0.030
G27     319.4          17.7                7.7 +/-    2.12      17.8 +/-    2.12  0.050 / 0.040
G29     167.2          34.0                9.9 +/-    0.73      16.1 +/-    0.73  0.060 / 0.080