PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-22:57:40
G05     48.6           20.0                8.3 +/-    2.73      18.2 +/-    2.73  0.380 / 0.810
G10     237.0          12.3               12.2 +/-   15.41      32.3 +/-   15.41  0.240 / 0.380
G13     76.1           37.4               10.9 +/-    0.94      16.5 +/-    0.94  0.040 / 0.060
G15     125.2          52.6               12.8 +/-    0.92      15.6 +/-    0.92  0.050 / 0.060
G16     315.0          11.5                7.4 +/-    5.46      20.1 +/-    5.46  0.100 / 0.260
G18     246.2          42.2                9.0 +/-   21.67      12.7 +/-   21.67  0.100 / 0.230
G20     30.3           64.3                9.9 +/-    1.02      10.9 +/-    1.02  0.200 / 0.240
G21     314.0          48.0                8.9 +/-    0.80      11.5 +/-    0.80  0.190 / 0.220
G26     288.6          19.7                8.7 +/-    0.99      19.3 +/-    0.99  0.090 / 0.110
G29     155.4          68.2               10.9 +/-    1.18      11.7 +/-    1.18  0.100 / 0.100