PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/30-16:58:10
G02     30.0           57.1                9.0 +/-    0.69      10.5 +/-    0.69  0.030 / 0.040
G05     140.9          62.3               12.3 +/-    0.61      13.8 +/-    0.61  0.040 / 0.040
G06     54.0           14.3                8.7 +/-    1.69      22.1 +/-    1.69  0.040 / 0.070
G12     197.1          67.5                9.7 +/-    0.78      10.4 +/-    0.78  0.040 / 0.060
G25     296.9          53.0               11.4 +/-    1.16      13.9 +/-    1.16  0.030 / 0.050
G29     307.4          28.2                9.1 +/-    1.00      16.5 +/-    1.00  0.030 / 0.050