PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-21:28:00
G02     76.6           20.1               10.4 +/-    1.22      22.8 +/-    1.22  0.110 / 0.330
G05     44.9           45.3               10.4 +/-    0.74      14.0 +/-    0.74  0.130 / 0.330
G12     180.0          10.4               16.8 +/-    0.77      46.4 +/-    0.77  0.090 / 0.190
G13     110.2          29.6               13.1 +/-    0.89      23.1 +/-    0.89  0.090 / 0.150
G15     152.1          29.9               15.4 +/-    0.83      27.0 +/-    0.83  0.050 / 0.150
G18     226.4          19.6               15.0 +/-    2.63      33.3 +/-    2.63  0.060 / 0.180
G20     253.4          84.9               12.0 +/-    0.75      12.1 +/-    0.75  0.030 / 0.070
G21     289.6          31.1               12.0 +/-    1.50      20.5 +/-    1.50  0.030 / 0.050
G25     210.0          30.9               13.9 +/-    1.88      23.8 +/-    1.88  0.080 / 0.160
G26     314.5          13.8               10.3 +/-    1.28      26.3 +/-    1.28  0.060 / 0.160