PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/15-15:43:10
G02     74.8           20.4                7.1 +/-    0.83      15.4 +/-    0.83  0.030 / 0.050
G05     45.1           46.4                7.3 +/-    0.63       9.6 +/-    0.63  0.020 / 0.050
G12     178.9          12.6                8.6 +/-    1.99      22.7 +/-    1.99  0.080 / 0.220
G13     109.4          27.0                9.8 +/-    0.53      18.2 +/-    0.53  0.070 / 0.190
G15     151.8          29.1               11.3 +/-    1.15      20.1 +/-    1.15  0.110 / 0.170
G20     228.2          15.6               10.0 +/-    2.20      24.5 +/-    2.20  0.100 / 0.200
G21     287.6          28.4                7.0 +/-    0.86      12.6 +/-    0.86  0.050 / 0.130
G25     216.9          36.5                9.3 +/-    1.86      14.4 +/-    1.86  0.060 / 0.110
G26     314.5          13.7                5.8 +/-    1.51      15.0 +/-    1.51  0.040 / 0.030
G29     342.9          73.0                8.7 +/-    0.58       9.1 +/-    0.58  0.030 / 0.030