PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/15-18:58:00
G10     261.8          35.3               10.7 +/-    1.28      16.9 +/-    1.28  0.090 / 0.180
G13     44.4           21.8               10.1 +/-    0.96      21.3 +/-    0.96  0.090 / 0.140
G15     69.5           55.5               11.0 +/-    0.33      13.0 +/-    0.33  0.040 / 0.050
G16     283.7          13.7                9.7 +/-    2.12      24.8 +/-    2.12  0.040 / 0.040
G20     288.3          57.9               12.4 +/-    1.20      14.4 +/-    1.20  0.170 / 0.320
G21     354.0          68.9               11.4 +/-    0.56      12.1 +/-    0.56  0.140 / 0.260
G24     121.5          11.7               13.4 +/-    2.98      36.0 +/-    2.98  0.080 / 0.300
G26     257.6          10.2               10.9 +/-    1.74      30.2 +/-    1.74  0.080 / 0.350
G27     321.2          13.5               10.0 +/-    2.71      25.7 +/-    2.71  0.090 / 0.250
G29     167.0          36.7               12.3 +/-    1.72      18.9 +/-    1.72  0.070 / 0.270