PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-00:57:50
G10     254.5          29.9               13.4 +/-    1.70      23.6 +/-    1.70  0.040 / 0.050
G13     49.7           27.2                8.8 +/-    2.65      16.3 +/-    2.65  0.040 / 0.040
G15     80.9           57.7               10.8 +/-    0.75      12.6 +/-    0.75  0.060 / 0.160
G16     289.9          15.4               10.7 +/-    1.30      26.3 +/-    1.30  0.070 / 0.160
G20     265.8          40.7               13.0 +/-    3.60      18.8 +/-    3.60  0.140 / 0.360
G21     338.2          62.7               10.9 +/-    0.51      12.1 +/-    0.51  0.200 / 0.440
G26     262.2          13.8               11.1 +/-    2.09      28.3 +/-    2.09  0.030 / 0.040
G29     166.3          46.0               10.5 +/-    0.76      14.0 +/-    0.76  0.040 / 0.040