PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-13:58:10
G02     33.3           54.6                5.1 +/-    0.48       6.1 +/-    0.48  0.020 / 0.050
G05     145.2          61.5                7.3 +/-    1.09       8.2 +/-    1.09  0.030 / 0.040
G06     54.0           14.1                3.0 +/-    1.10       7.5 +/-    1.10  0.040 / 0.050
G12     193.1          66.1                4.1 +/-    1.82       4.5 +/-    1.82  0.040 / 0.060
G25     296.5          53.3                5.3 +/-    0.82       6.4 +/-    0.82  0.050 / 0.060
G29     307.1          27.7                2.4 +/-    0.98       4.5 +/-    0.98  0.050 / 0.050