PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-01:12:40
G10     262.8          35.6               15.4 +/-    1.12      24.1 +/-    1.12  0.140 / 0.360
G13     44.0           21.3                9.3 +/-    0.87      19.9 +/-    0.87  0.150 / 0.320
G15     66.2           53.6               10.5 +/-    0.36      12.7 +/-    0.36  0.080 / 0.380
G16     281.5          13.5               13.2 +/-    1.27      33.9 +/-    1.27  0.090 / 0.340
G20     275.2          45.7               12.6 +/-    1.06      16.8 +/-    1.06  0.080 / 0.060
G21     351.7          68.7               10.9 +/-    1.05      11.6 +/-    1.05  0.080 / 0.050
G24     122.6          11.9               12.9 +/-    2.22      34.5 +/-    2.22  0.070 / 0.260
G27     320.3          15.6                8.8 +/-    1.46      21.6 +/-    1.46  0.070 / 0.220
G29     167.9          36.5               15.3 +/-    1.18      23.5 +/-    1.18  0.100 / 0.290