PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-15:43:00
G02     205.8          37.0                9.5 +/-    0.66      14.5 +/-    0.66  0.130 / 0.110
G06     140.7          74.9               10.1 +/-    0.97      10.4 +/-    0.97  0.130 / 0.120
G12     311.6          23.4                8.3 +/-    0.82      16.9 +/-    0.82  0.070 / 0.110
G17     41.7           44.4                8.7 +/-    1.16      11.9 +/-    1.16  0.060 / 0.110
G19     3.2            64.1                8.9 +/-    0.52       9.8 +/-    0.52  0.040 / 0.020
G24     290.4          41.3               12.0 +/-    5.11      17.1 +/-    5.11  0.050 / 0.030
G28     106.9          28.1                9.6 +/-    0.80      17.4 +/-    0.80  0.040 / 0.030