PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/13-13:57:50
G02     231.0          72.1                7.4 +/-    0.76       7.8 +/-    0.76  0.040 / 0.070
G05     175.6          10.7               -1.9 +/-   28.31      -5.1 +/-   28.31  0.030 / 0.070
G06     42.3           64.9                6.0 +/-    0.42       6.5 +/-    0.42  0.150 / 0.260
G12     321.2          46.9                6.2 +/-    1.50       8.2 +/-    1.50  0.140 / 0.300
G17     69.1           22.8                5.5 +/-    0.72      11.3 +/-    0.72  0.160 / 0.430
G19     54.7           39.7                5.5 +/-    0.61       8.0 +/-    0.61  0.150 / 0.350
G24     251.9          37.2                6.6 +/-    0.73      10.0 +/-    0.73  0.070 / 0.120
G25     316.0          10.7              -12.5 +/-   26.26     -34.4 +/-   26.26  0.050 / 0.120