PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/09-19:13:20
G10     258.0          32.7               12.6 +/-    2.29      20.9 +/-    2.29  0.130 / 0.350
G13     46.9           24.5               12.9 +/-    0.77      25.5 +/-    0.77  0.040 / 0.050
G15     76.6           57.7               13.5 +/-    0.29      15.6 +/-    0.29  0.040 / 0.050
G16     287.3          14.6                8.5 +/-    0.96      21.3 +/-    0.96  0.120 / 0.360
G20     281.9          55.8               13.9 +/-    0.81      16.4 +/-    0.81  0.120 / 0.300
G21     346.6          66.2               11.9 +/-    0.89      12.8 +/-    0.89  0.060 / 0.240
G26     260.7          12.0               10.7 +/-    1.45      28.7 +/-    1.45  0.060 / 0.210
G27     322.2          10.5              -14.6 +/-   19.04     -40.2 +/-   19.04  0.030 / 0.030
G29     166.4          41.0               15.9 +/-    0.92      22.7 +/-    0.92  0.040 / 0.040