PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-22:42:40
G10     268.6          38.4                9.1 +/-    1.80      13.5 +/-    1.80  0.040 / 0.040
G13     41.9           18.7                8.3 +/-    0.66      19.0 +/-    0.66  0.040 / 0.060
G15     58.0           48.1                9.7 +/-    0.62      12.5 +/-    0.62  0.130 / 0.300
G16     280.5          10.8                9.2 +/-    3.33      25.2 +/-    3.33  0.150 / 0.210
G18     304.0          64.8                6.7 +/-    0.60       7.3 +/-    0.60  0.100 / 0.460
G20     56.0           32.9                8.1 +/-    0.50      13.3 +/-    0.50  0.100 / 0.570
G21     10.5           73.4               10.9 +/-    0.92      11.3 +/-    0.92  0.090 / 0.230
G24     120.1          14.9               14.9 +/-    1.64      37.2 +/-    1.64  0.110 / 0.250
G27     316.9          21.6                6.0 +/-    2.98      12.7 +/-    2.98  0.100 / 0.180
G29     166.7          25.9               11.9 +/-    1.22      22.8 +/-    1.22  0.080 / 0.160