PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-22:12:50
G10     256.9          30.8               13.7 +/-    2.47      23.7 +/-    2.47  0.190 / 0.410
G13     48.8           27.2               11.4 +/-    1.40      21.2 +/-    1.40  0.170 / 0.410
G15     73.8           55.4               13.1 +/-    0.68      15.6 +/-    0.68  0.040 / 0.050
G16     291.7          13.6               11.3 +/-    1.81      29.0 +/-    1.81  0.030 / 0.050
G18     280.8          60.0               12.9 +/-    1.01      14.7 +/-    1.01  0.130 / 0.340
G20     48.0           42.0               11.5 +/-    0.42      16.2 +/-    0.42  0.120 / 0.350
G21     345.4          66.0               12.0 +/-    1.24      13.1 +/-    1.24  0.150 / 0.250
G26     264.4          12.4               13.3 +/-    1.65      35.3 +/-    1.65  0.140 / 0.240
G27     321.4          12.4               10.2 +/-    1.97      26.9 +/-    1.97  0.050 / 0.080
G29     165.0          38.1               13.0 +/-    0.93      19.5 +/-    0.93  0.050 / 0.080