PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/15-16:58:00
G02     339.6          77.8                8.9 +/-    0.43       9.1 +/-    0.43  0.030 / 0.030
G05     164.1          34.9               10.2 +/-    1.07      16.2 +/-    1.07  0.040 / 0.030
G06     41.9           37.5                7.3 +/-    1.41      11.1 +/-    1.41  0.170 / 0.140
G12     308.8          72.6                9.8 +/-    1.10      10.2 +/-    1.10  0.130 / 0.160
G17     85.8           13.1                8.1 +/-    3.06      20.9 +/-    3.06  0.220 / 0.310
G19     77.3           24.3                9.1 +/-    2.09      18.0 +/-    2.09  0.140 / 0.300
G24     227.6          21.3               10.3 +/-    1.73      21.9 +/-    1.73  0.060 / 0.100
G25     316.7          29.7                9.8 +/-    1.72      17.2 +/-    1.72  0.060 / 0.100