PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-15:43:10
G02     211.4          51.8               14.3 +/-    0.59      17.6 +/-    0.59  0.040 / 0.040
G06     86.4           79.4               13.1 +/-    0.42      13.3 +/-    0.42  0.040 / 0.030
G12     316.5          30.3               11.8 +/-    1.59      20.6 +/-    1.59  0.080 / 0.050
G17     54.1           34.2               11.5 +/-    0.86      18.5 +/-    0.86  0.070 / 0.050
G19     34.4           51.9               13.2 +/-    1.70      16.2 +/-    1.70  0.070 / 0.080
G24     276.7          42.0               11.3 +/-    0.58      15.9 +/-    0.58  0.090 / 0.080
G28     118.6          17.9               12.8 +/-    1.24      29.6 +/-    1.24  0.070 / 0.060