PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-01:42:50
G10     254.1382       28.5926          9.1896 +/-  1.6352   16.5790 +/-  1.6352  0.090 / 0.130
G13     50.8009        28.7343          8.7902 +/-  1.3372   15.8102 +/-  1.3372  0.070 / 0.120
G15     83.1205        58.1458         11.5293 +/-  0.6568   13.3154 +/-  0.6568  0.030 / 0.060
G16     292.7888       14.4367          6.8023 +/-  2.7341   17.1515 +/-  2.7341  0.030 / 0.050
G18     273.7732       56.9880         10.9947 +/-  0.9482   12.8395 +/-  0.9482  0.100 / 0.270
G20     46.5711        43.5146          9.8171 +/-  0.9199   13.5176 +/-  0.9199  0.100 / 0.290
G21     338.2168       62.9853          9.7398 +/-  0.6558   10.7913 +/-  0.6558  0.120 / 0.210
G26     265.2391       13.8603          9.0052 +/-  0.9962   23.0218 +/-  0.9962  0.110 / 0.190
G29     165.4330       43.5316         11.6948 +/-  0.8342   16.0990 +/-  0.8342  0.040 / 0.060