PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-22:27:40
G05     48.9           19.4                8.9 +/-    2.57      19.8 +/-    2.57  0.100 / 0.230
G10     237.8          13.2               16.4 +/-    1.99      42.5 +/-    1.99  0.100 / 0.180
G13     74.5           37.3               11.1 +/-    1.04      16.9 +/-    1.04  0.260 / 0.380
G15     122.7          53.4               13.7 +/-    0.74      16.6 +/-    0.74  0.120 / 0.300
G16     314.2          11.8                8.9 +/-    2.67      23.8 +/-    2.67  0.070 / 0.130
G18     247.5          43.4               13.4 +/-    2.29      18.4 +/-    2.29  0.070 / 0.120
G20     31.0           63.3               10.8 +/-    0.52      12.0 +/-    0.52  0.020 / 0.030
G21     315.3          49.0                9.9 +/-    0.86      12.7 +/-    0.86  0.030 / 0.030
G26     287.6          19.5                9.9 +/-    1.38      22.1 +/-    1.38  0.040 / 0.030
G29     156.0          66.4               11.6 +/-    0.46      12.6 +/-    0.46  0.040 / 0.030