PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/07-16:42:50
G10     272.8          40.9                8.6 +/-    1.36      12.3 +/-    1.36  0.090 / 0.100
G13     40.1           15.1                6.8 +/-    2.74      16.8 +/-    2.74  0.120 / 0.100
G15     53.4           43.1                7.4 +/-    1.02      10.2 +/-    1.02  0.110 / 0.170
G18     317.5          66.7                8.5 +/-    0.61       9.2 +/-    0.61  0.150 / 0.200
G20     57.2           32.9                6.2 +/-    1.28      10.3 +/-    1.28  0.050 / 0.100
G21     39.9           75.1                7.9 +/-    0.69       8.2 +/-    0.69  0.050 / 0.110
G24     116.8          17.1               10.8 +/-    1.39      25.4 +/-    1.39  0.130 / 0.500
G27     315.0          24.1                8.1 +/-    1.57      16.2 +/-    1.57  0.490 / 0.210
G29     166.5          21.3               10.1 +/-    1.35      21.5 +/-    1.35  0.040 / 0.030
G32     205.7          13.2               10.8 +/-    2.61      28.1 +/-    2.61  0.030 / 0.030