PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-16:58:00
G02     270.3          79.0                4.2 +/-    4.23       4.2 +/-    4.23  0.030 / 0.040
G05     169.0          23.7               11.6 +/-    2.26      23.5 +/-    2.26  0.040 / 0.040
G06     40.5           47.1                3.2 +/-   28.29       4.2 +/-   28.29  0.080 / 0.170
G12     320.9          66.6                1.3 +/-   30.33       1.4 +/-   30.33  0.070 / 0.140
G17     79.0           15.6                6.5 +/-    2.57      15.9 +/-    2.57  0.060 / 0.140
G19     63.3           36.2                6.0 +/-    4.32       9.3 +/-    4.32  0.080 / 0.160
G24     234.5          28.9                9.2 +/-   29.88      16.5 +/-   29.88  0.070 / 0.090
G25     317.6          21.0                3.1 +/-   29.69       6.6 +/-   29.69  0.070 / 0.100