PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/03-21:13:00
G10     274.8          41.8               17.5 +/-    1.77      24.7 +/-    1.77  0.130 / 0.280
G13     39.7           14.1               14.4 +/-    2.20      36.5 +/-    2.20  0.130 / 0.270
G15     52.8           42.9               17.7 +/-    0.64      24.6 +/-    0.64  0.040 / 0.040
G18     318.4          66.4               16.0 +/-    1.09      17.3 +/-    1.09  0.030 / 0.040
G20     59.6           29.5               17.0 +/-    0.56      30.1 +/-    0.56  0.090 / 0.430
G21     33.3           75.9               16.5 +/-    0.74      17.0 +/-    0.74  0.100 / 0.320
G24     115.4          18.1               22.0 +/-    1.65      50.7 +/-    1.65  0.080 / 0.150
G27     313.7          25.6               15.7 +/-    1.04      30.3 +/-    1.04  0.060 / 0.120
G29     166.5          19.3               20.1 +/-    1.86      45.0 +/-    1.86  0.070 / 0.290
G32     206.6          12.9               20.3 +/-    3.84      53.1 +/-    3.84  0.070 / 0.240