PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-20:27:40
G10     261.1          33.7               22.2 +/-    1.23      36.1 +/-    1.23  0.040 / 0.050
G13     45.7           23.9               18.0 +/-    1.36      36.1 +/-    1.36  0.040 / 0.050
G15     66.0           52.4               20.9 +/-    0.83      25.6 +/-    0.83  0.160 / 0.490
G16     288.8          12.5               21.5 +/-    1.89      56.8 +/-    1.89  0.180 / 0.360
G18     289.9          62.6               21.8 +/-    0.65      24.3 +/-    0.65  0.110 / 0.510
G20     50.5           39.3               19.4 +/-    0.71      28.5 +/-    0.71  0.100 / 0.520
G21     355.7          69.4               23.0 +/-    0.68      24.4 +/-    0.68  0.060 / 0.190
G26     261.9          10.4               18.9 +/-    2.18      52.3 +/-    2.18  0.060 / 0.260
G27     320.1          15.8               18.7 +/-    2.96      45.7 +/-    2.96  0.040 / 0.090
G29     165.1          32.3               24.9 +/-    1.65      41.7 +/-    1.65  0.040 / 0.080