PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-19:43:10
G02     63.9           30.4               12.4 +/-    1.00      21.5 +/-    1.00  0.030 / 0.050
G05     50.9           55.5               12.0 +/-    0.78      14.2 +/-    0.78  0.030 / 0.040
G12     180.1          21.7               15.8 +/-    0.88      33.4 +/-    0.88  0.120 / 0.330
G13     122.0          19.9               16.7 +/-    0.96      36.9 +/-    0.96  0.110 / 0.370
G15     163.0          16.1               19.1 +/-    1.57      46.4 +/-    1.57  0.150 / 0.250
G21     276.6          20.6               13.0 +/-    1.49      28.2 +/-    1.49  0.070 / 0.220
G25     226.0          46.2               14.6 +/-    1.86      19.4 +/-    1.86  0.090 / 0.200
G29     331.7          60.1               12.9 +/-    0.70      14.7 +/-    0.70  0.090 / 0.180