PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/19-17:13:10
G02     71.8           22.6               13.5 +/-    0.84      27.9 +/-    0.84  0.030 / 0.040
G05     46.9           50.2               13.1 +/-    1.11      16.4 +/-    1.11  0.020 / 0.040
G12     182.7          18.3               18.2 +/-    1.53      41.8 +/-    1.53  0.080 / 0.240
G13     117.3          25.0               16.9 +/-    0.95      33.0 +/-    0.95  0.080 / 0.290
G15     155.0          24.4               20.3 +/-    0.97      40.2 +/-    0.97  0.050 / 0.040
G18     222.9          14.5               18.2 +/-    2.17      45.8 +/-    2.17  0.040 / 0.040
G20     222.4          75.8               16.4 +/-    0.92      16.9 +/-    0.92  0.060 / 0.180
G21     284.4          28.4               11.9 +/-    1.57      21.6 +/-    1.57  0.080 / 0.180
G25     217.8          38.9               18.0 +/-    1.71      26.7 +/-    1.71  0.060 / 0.090
G29     349.9          74.7               14.4 +/-    0.42      14.9 +/-    0.42  0.060 / 0.090