PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-15:28:10
G10     250.9          26.3               10.0 +/-    1.49      18.9 +/-    1.49  0.120 / 0.300
G13     54.0           30.7                7.2 +/-    2.08      12.4 +/-    2.08  0.140 / 0.290
G15     83.2           56.4                9.5 +/-    0.99      11.1 +/-    0.99  0.040 / 0.050
G16     299.5          13.8                5.1 +/-    1.80      13.1 +/-    1.80  0.050 / 0.050
G18     271.9          58.0                9.6 +/-    1.47      11.0 +/-    1.47  0.090 / 0.380
G20     40.9           50.8                7.8 +/-    0.61       9.8 +/-    0.61  0.110 / 0.400
G26     269.9          15.2                6.4 +/-    1.37      15.9 +/-    1.37  0.080 / 0.110
G29     162.8          45.0               10.4 +/-    0.62      14.0 +/-    0.62  0.090 / 0.120