PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-17:43:10
G02     26.6           61.0               14.2 +/-    0.73      15.9 +/-    0.73  0.040 / 0.050
G05     155.4          54.6               16.9 +/-    0.45      20.2 +/-    0.45  0.050 / 0.050
G06     50.9           20.9               11.1 +/-    3.37      23.8 +/-    3.37  0.030 / 0.020
G12     210.2          73.5               13.7 +/-    0.99      14.2 +/-    0.99  0.030 / 0.030
G19     96.6           11.5               13.8 +/-    2.25      37.3 +/-    2.25  0.040 / 0.040
G20     197.7          21.3               17.1 +/-    2.11      36.4 +/-    2.11  0.030 / 0.030
G25     301.5          52.7               13.5 +/-    1.65      16.6 +/-    1.65  0.110 / 0.150
G29     305.2          27.1               13.8 +/-    1.38      25.7 +/-    1.38  0.060 / 0.140