PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/10-16:58:10
G10     288.5          48.2                7.9 +/-    3.02      10.2 +/-    3.02  0.070 / 0.110
G15     47.1           32.1                5.9 +/-    1.34       9.9 +/-    1.34  0.070 / 0.090
G18     349.2          66.8                7.6 +/-    0.35       8.2 +/-    0.35  0.060 / 0.140
G20     66.3           24.1                6.6 +/-    2.70      13.1 +/-    2.70  0.070 / 0.120
G21     89.0           72.6                8.8 +/-    0.43       9.2 +/-    0.43  0.090 / 0.120
G24     104.9          24.0                8.4 +/-    1.00      16.9 +/-    1.00  0.090 / 0.120
G27     305.1          32.3                7.2 +/-    1.19      12.1 +/-    1.19  0.050 / 0.030
G32     208.9          25.3               10.5 +/-    1.79      20.4 +/-    1.79  0.080 / 0.030