PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/17-12:28:10
G02     54.4           35.9                4.6 +/-    0.76       7.1 +/-    0.76  0.020 / 0.030
G05     77.5           69.3                5.6 +/-    0.56       5.9 +/-    0.56  0.020 / 0.030
G12     182.4          38.0                5.8 +/-    1.14       8.7 +/-    1.14  0.040 / 0.060
G13     132.1          10.0               -6.2 +/-   16.57     -17.4 +/-   16.57  0.040 / 0.050
G21     266.0          12.8                7.7 +/-    2.67      20.1 +/-    2.67  0.040 / 0.080
G25     249.4          56.3                7.3 +/-    1.87       8.5 +/-    1.87  0.060 / 0.050
G29     323.1          46.7                4.8 +/-    0.40       6.4 +/-    0.40  0.290 / 0.350