PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/17-15:27:40
G02     72.1           22.4                6.1 +/-    1.73      12.6 +/-    1.73  0.030 / 0.040
G05     46.2           49.9                5.7 +/-    0.62       7.2 +/-    0.62  0.040 / 0.030
G12     179.6          15.7                7.9 +/-    1.95      19.3 +/-    1.95  0.170 / 0.340
G13     112.9          25.0               10.1 +/-    3.07      19.7 +/-    3.07  0.160 / 0.370
G15     153.9          26.2                8.8 +/-    1.37      16.8 +/-    1.37  0.100 / 0.250
G20     226.5          12.8                2.4 +/-   20.18       6.3 +/-   20.18  0.190 / 0.260
G21     284.6          26.3                6.7 +/-    0.98      12.8 +/-    0.98  0.060 / 0.110
G25     219.6          39.6                9.7 +/-    1.15      14.2 +/-    1.15  0.080 / 0.100
G26     317.0          11.9               -4.0 +/-   28.10     -10.6 +/-   28.10  0.030 / 0.040
G29     339.5          69.3                6.5 +/-    0.46       6.9 +/-    0.46  0.030 / 0.030