PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/07-10:12:40
G02     35.5           52.6                5.6 +/-    0.82       6.8 +/-    0.82  0.030 / 0.030
G05     143.0          61.7                9.8 +/-    0.47      10.9 +/-    0.47  0.030 / 0.030
G06     53.5           15.0                3.8 +/-    1.82       9.4 +/-    1.82  0.050 / 0.050
G12     192.6          66.3                7.1 +/-    0.64       7.7 +/-    0.64  0.050 / 0.060
G25     296.1          53.8                5.0 +/-    1.99       6.0 +/-    1.99  0.150 / 0.150
G29     306.8          27.3                5.5 +/-    1.73      10.2 +/-    1.73  0.060 / 0.110