PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-01:58:00
G10     288.8          48.7               10.2 +/-    3.40      13.0 +/-    3.40  0.090 / 0.110
G15     48.0           35.8                9.1 +/-    1.04      14.3 +/-    1.04  0.070 / 0.100
G20     306.1          57.5               10.4 +/-    0.70      12.1 +/-    0.70  0.040 / 0.030
G21     69.0           77.3               11.7 +/-    0.58      12.0 +/-    0.58  0.040 / 0.030
G24     102.7          23.9               11.7 +/-    1.27      23.4 +/-    1.27  0.070 / 0.150
G27     306.6          31.2                9.6 +/-    1.44      16.4 +/-    1.44  0.070 / 0.130
G29     168.9          14.1               12.7 +/-    2.70      32.4 +/-    2.70  0.060 / 0.060
G32     207.9          27.8               14.1 +/-    1.50      25.9 +/-    1.50  0.060 / 0.060