PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-21:57:40
G02     69.5           26.0               10.7 +/-    0.88      20.5 +/-    0.88  0.120 / 0.240
G05     47.7           52.8                9.1 +/-    0.40      11.2 +/-    0.40  0.090 / 0.190
G12     181.8          17.9               13.4 +/-    1.61      31.1 +/-    1.61  0.070 / 0.100
G13     118.3          24.4               13.7 +/-    1.04      27.2 +/-    1.04  0.070 / 0.100
G15     157.7          22.2               15.3 +/-    1.30      31.8 +/-    1.30  0.030 / 0.030
G18     222.5          11.9               16.5 +/-   14.93      44.1 +/-   14.93  0.030 / 0.040
G20     219.3          76.8               12.9 +/-    1.03      13.2 +/-    1.03  0.110 / 0.230
G21     282.2          25.8               13.1 +/-    1.59      25.1 +/-    1.59  0.080 / 0.200
G25     215.1          38.5               13.7 +/-    1.79      20.5 +/-    1.79  0.030 / 0.050
G29     340.9          70.6               13.6 +/-    0.71      14.3 +/-    0.71  0.030 / 0.040