PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-19:58:10
G02     16.8           67.0               10.6 +/-    0.40      11.5 +/-    0.40  0.110 / 0.270
G05     158.8          49.3               15.9 +/-    0.78      20.2 +/-    0.78  0.120 / 0.260
G06     48.6           24.3               10.4 +/-    0.89      20.6 +/-    0.89  0.030 / 0.030
G12     223.7          77.7               11.0 +/-    0.78      11.2 +/-    0.78  0.020 / 0.040
G19     92.2           14.7               12.0 +/-    1.62      30.0 +/-    1.62  0.040 / 0.080
G20     197.1          16.8               18.6 +/-    2.28      44.3 +/-    2.28  0.040 / 0.070
G24     216.8          10.8               16.6 +/-    2.11      45.5 +/-    2.11  0.080 / 0.180
G25     306.5          50.1               14.1 +/-    1.14      17.7 +/-    1.14  0.060 / 0.160
G29     300.5          21.9               13.5 +/-    1.77      28.3 +/-    1.77  0.040 / 0.060