PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/02-18:58:00
G02     33.4           54.5                8.1 +/-    0.79       9.7 +/-    0.79  0.050 / 0.060
G05     134.9          64.2                9.9 +/-    0.92      10.9 +/-    0.92  0.040 / 0.050
G06     55.0           13.2                5.6 +/-    1.00      14.6 +/-    1.00  0.050 / 0.050
G12     197.0          66.0                6.7 +/-    0.91       7.3 +/-    0.91  0.050 / 0.070
G25     293.8          54.3                7.3 +/-    0.76       8.8 +/-    0.76  0.040 / 0.050
G29     309.1          30.2                7.8 +/-    1.90      13.5 +/-    1.90  0.030 / 0.050