PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-22:42:40
G10     286.1          47.1               12.1 +/-    3.24      15.8 +/-    3.24  0.160 / 0.080
G15     48.1           35.5               11.3 +/-    0.72      17.7 +/-    0.72  0.160 / 0.070
G18     339.8          66.9               12.6 +/-    0.63      13.6 +/-    0.63  0.050 / 0.040
G20     66.2           22.6               11.0 +/-    3.02      22.7 +/-    3.02  0.050 / 0.040
G21     70.8           76.4               14.2 +/-    0.93      14.6 +/-    0.93  0.080 / 0.140
G24     106.9          23.1               14.9 +/-    1.30      30.4 +/-    1.30  0.120 / 0.160
G27     306.4          31.5               12.9 +/-    0.63      22.0 +/-    0.63  0.060 / 0.090
G29     166.9          11.2               21.7 +/-    2.43      58.9 +/-    2.43  0.070 / 0.080
G32     208.7          22.2               18.7 +/-    1.34      39.1 +/-    1.34  0.250 / 0.380