PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-14:57:40
G10     256.5          30.7                7.8 +/-    1.26      13.5 +/-    1.26  0.470 / 0.340
G13     48.7           26.8                5.7 +/-    1.81      10.7 +/-    1.81  0.170 / 0.150
G15     71.7           54.0                9.3 +/-    0.71      11.2 +/-    0.71  0.090 / 0.060
G16     292.8          13.5                3.5 +/-    2.57       9.1 +/-    2.57  0.070 / 0.060
G18     283.2          61.6                8.2 +/-    1.20       9.2 +/-    1.20  0.120 / 0.240
G20     45.3           45.9                6.7 +/-    0.45       8.9 +/-    0.45  0.240 / 0.320
G21     353.3          67.9                6.7 +/-    0.37       7.2 +/-    0.37  0.110 / 0.220
G26     263.6          12.7                6.2 +/-    1.26      16.2 +/-    1.26  0.140 / 0.150
G27     321.7          11.6               -4.1 +/-   20.85     -11.1 +/-   20.85  0.110 / 0.280
G29     164.7          38.6               10.9 +/-    1.04      16.3 +/-    1.04  0.100 / 0.330