PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-18:57:30
G10     291.2          49.2               10.2 +/-    1.26      13.0 +/-    1.26  0.060 / 0.080
G15     46.7           30.7                9.3 +/-    0.61      16.1 +/-    0.61  0.070 / 0.090
G18     352.4          66.6                8.7 +/-    0.51       9.4 +/-    0.51  0.070 / 0.250
G20     68.2           21.8                8.1 +/-    1.01      17.1 +/-    1.01  0.090 / 0.220
G21     91.8           72.9               10.9 +/-    0.61      11.4 +/-    0.61  0.040 / 0.050
G24     103.0          24.9               10.0 +/-    1.10      19.6 +/-    1.10  0.040 / 0.050
G27     303.0          33.4               10.2 +/-    2.12      16.7 +/-    2.12  0.060 / 0.140
G32     209.7          26.4                9.2 +/-    0.90      17.4 +/-    0.90  0.060 / 0.140