PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-17:58:10
G02     32.7           55.6               10.6 +/-    1.45      12.5 +/-    1.45  0.030 / 0.030
G05     135.3          64.4               12.6 +/-    0.22      13.8 +/-    0.22  0.030 / 0.040
G06     56.1           11.5                8.5 +/-    1.75      23.0 +/-    1.75  0.040 / 0.050
G12     186.8          60.5               11.9 +/-    0.71      13.5 +/-    0.71  0.040 / 0.050
G19     101.1          11.0               11.5 +/-    3.35      31.4 +/-    3.35  0.040 / 0.040
G25     290.8          56.2               12.7 +/-    2.61      15.0 +/-    2.61  0.040 / 0.030
G29     308.7          28.9                9.3 +/-    0.94      16.6 +/-    0.94  0.070 / 0.130