PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-16:13:10
G02     228.1          69.2               13.2 +/-    0.67      14.0 +/-    0.67  0.170 / 0.000
G06     43.2           64.9               14.3 +/-    0.41      15.6 +/-    0.41  0.060 / 0.080
G12     321.3          46.4               13.6 +/-    0.72      18.0 +/-    0.72  0.110 / 0.090
G17     68.2           23.3               12.9 +/-    1.49      26.2 +/-    1.49  0.030 / 0.060
G19     53.5           40.4               13.1 +/-    1.42      19.0 +/-    1.42  0.040 / 0.050
G24     253.7          37.9               12.0 +/-    2.92      18.0 +/-    2.92  0.070 / 0.090
G25     315.8          10.8              -14.9 +/-   19.57     -41.0 +/-   19.57  0.070 / 0.110