PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-17:27:40
G10     255.9          30.1               13.4 +/-    1.26      23.4 +/-    1.26  0.160 / 0.400
G13     49.3           27.4                8.1 +/-    1.19      15.0 +/-    1.19  0.190 / 0.280
G15     73.4           54.6               10.6 +/-    0.39      12.7 +/-    0.39  0.060 / 0.060
G16     295.4          13.0               10.4 +/-    2.16      27.1 +/-    2.16  0.070 / 0.060
G18     280.9          60.7               12.3 +/-    0.91      13.9 +/-    0.91  0.120 / 0.330
G20     45.8           45.0                9.2 +/-    0.38      12.4 +/-    0.38  0.160 / 0.410
G21     349.8          67.0                9.2 +/-    1.00       9.9 +/-    1.00  0.040 / 0.070
G26     265.9          12.9               11.5 +/-    2.10      30.1 +/-    2.10  0.040 / 0.070
G27     321.8          11.2               -2.0 +/-   36.65      -5.5 +/-   36.65  0.080 / 0.140
G29     163.7          37.6               13.9 +/-    0.76      21.0 +/-    0.76  0.080 / 0.170