PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-10:57:30
G02     66.2           25.6                4.5 +/-    1.98       8.7 +/-    1.98  0.020 / 0.030
G05     51.1           56.5                5.4 +/-    0.58       6.4 +/-    0.58  0.030 / 0.030
G12     181.5          24.8                6.9 +/-    1.33      13.6 +/-    1.33  0.090 / 0.130
G13     120.9          19.3                7.3 +/-    2.18      16.2 +/-    2.18  0.090 / 0.120
G15     156.9          19.8                4.1 +/-    2.76       9.0 +/-    2.76  0.380 / 0.410
G21     277.8          22.2                6.6 +/-    1.69      13.8 +/-    1.69  0.120 / 0.200
G25     227.0          46.9                7.2 +/-    3.46       9.5 +/-    3.46  0.030 / 0.040
G29     332.6          60.0                5.3 +/-    0.62       6.0 +/-    0.62  0.030 / 0.040