PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-15:27:40
G10     260.4          35.8                9.8 +/-    2.22      15.4 +/-    2.22  0.100 / 0.280
G13     45.1           22.0                5.8 +/-    2.46      12.2 +/-    2.46  0.110 / 0.320
G15     64.7           51.0                6.7 +/-    1.65       8.4 +/-    1.65  0.130 / 0.340
G16     284.7          14.6                5.6 +/-    3.41      14.0 +/-    3.41  0.120 / 0.310
G20     289.6          59.1                9.4 +/-    1.45      10.7 +/-    1.45  0.040 / 0.080
G21     350.4          67.3                6.6 +/-    1.24       7.1 +/-    1.24  0.060 / 0.060
G24     127.7          10.1              -12.0 +/-   30.29     -33.5 +/-   30.29  0.040 / 0.040
G26     259.1          11.0                5.4 +/-    2.46      14.7 +/-    2.46  0.040 / 0.040
G27     321.2          13.4                4.5 +/-    2.40      11.7 +/-    2.40  0.120 / 0.340
G29     166.4          39.8                9.9 +/-    1.35      14.5 +/-    1.35  0.220 / 0.350