PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/10-17:27:30
G02     63.6           29.3                9.2 +/-    1.00      16.3 +/-    1.00  0.050 / 0.090
G05     54.6           60.3                9.7 +/-    0.59      11.0 +/-    0.59  0.050 / 0.100
G12     184.8          28.2               11.6 +/-    3.06      21.2 +/-    3.06  0.080 / 0.130
G13     126.1          18.3               12.0 +/-    1.88      27.5 +/-    1.88  0.080 / 0.130
G15     160.9          15.8               14.1 +/-    2.89      34.5 +/-    2.89  0.030 / 0.040
G20     210.9          65.1               12.3 +/-    1.27      13.5 +/-    1.27  0.030 / 0.040
G21     275.7          22.0               10.3 +/-    1.40      21.6 +/-    1.40  0.080 / 0.260
G25     227.1          47.6               12.9 +/-    1.24      16.8 +/-    1.24  0.110 / 0.250
G29     336.9          64.0                9.3 +/-    0.91      10.2 +/-    0.91  0.050 / 0.060