PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-19:42:40
G02     24.7           62.1               12.0 +/-    1.23      13.4 +/-    1.23  0.040 / 0.070
G05     154.8          54.9               14.7 +/-    0.51      17.6 +/-    0.51  0.040 / 0.060
G06     51.2           19.9                8.4 +/-    0.65      18.6 +/-    0.65  0.030 / 0.040
G12     206.9          72.9               13.6 +/-    0.64      14.1 +/-    0.64  0.030 / 0.040
G19     96.8           11.3               10.3 +/-    1.83      28.0 +/-    1.83  0.060 / 0.150
G20     197.3          22.0               16.1 +/-    1.01      33.8 +/-    1.01  0.040 / 0.150
G25     300.1          54.0               13.5 +/-    1.35      16.2 +/-    1.35  0.040 / 0.040
G29     304.7          26.1               12.0 +/-    1.44      22.8 +/-    1.44  0.030 / 0.060