PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/05-17:58:00
G02     247.0          75.7                9.0 +/-    0.32       9.3 +/-    0.32  0.220 / 0.170
G05     171.0          18.3               11.8 +/-    2.88      27.0 +/-    2.88  0.090 / 0.130
G06     40.5           53.5                8.4 +/-    0.35      10.2 +/-    0.35  0.070 / 0.150
G12     322.6          59.2                7.5 +/-    0.80       8.6 +/-    0.80  0.110 / 0.110
G17     73.6           19.9                8.4 +/-    1.97      18.5 +/-    1.97  0.130 / 0.440
G19     57.3           39.6                8.5 +/-    0.79      12.5 +/-    0.79  0.170 / 0.260
G24     240.6          33.0               11.4 +/-    1.55      18.8 +/-    1.55  0.030 / 0.030
G25     317.1          15.2                7.0 +/-    1.91      17.4 +/-    1.91  0.030 / 0.040