PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/11-10:27:40
G02     47.0           42.0                4.4 +/-    0.41       6.2 +/-    0.41  0.040 / 0.030
G05     107.0          70.2                8.0 +/-    0.67       8.4 +/-    0.67  0.030 / 0.030
G12     185.9          50.6                8.2 +/-    2.17      10.3 +/-    2.17  0.050 / 0.050
G25     269.5          58.6                8.1 +/-    0.79       9.3 +/-    0.79  0.040 / 0.050
G29     316.4          38.1                6.2 +/-    0.73       9.2 +/-    0.73  0.050 / 0.070