PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-23:43:00
G10     264.1          35.6               16.3 +/-    1.03      25.6 +/-    1.03  0.240 / 0.380
G13     43.9           21.8               12.0 +/-    1.50      25.2 +/-    1.50  0.200 / 0.460
G15     63.5           51.8               14.5 +/-    0.72      17.9 +/-    0.72  0.080 / 0.100
G16     283.9          12.1               16.1 +/-    2.88      42.9 +/-    2.88  0.080 / 0.060
G18     294.0          63.0               13.5 +/-    0.85      14.9 +/-    0.85  0.040 / 0.040
G20     53.3           35.8               13.0 +/-    0.99      20.4 +/-    0.99  0.040 / 0.040
G21     357.9          70.6               14.0 +/-    0.41      14.8 +/-    0.41  0.170 / 0.180
G24     123.6          12.3               15.6 +/-    2.06      41.4 +/-    2.06  0.180 / 0.230
G27     318.9          18.3               14.5 +/-    2.47      33.2 +/-    2.47  0.110 / 0.130
G29     166.6          31.0               14.4 +/-    0.96      24.7 +/-    0.96  0.110 / 0.140