PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/28-18:42:50
G10     253.1          28.0               13.0 +/-    1.41      23.7 +/-    1.41  0.040 / 0.040
G13     51.9           29.5               11.5 +/-    1.57      20.4 +/-    1.57  0.050 / 0.040
G15     79.4           56.1               12.1 +/-    0.39      14.3 +/-    0.39  0.050 / 0.080
G16     298.2          13.3               10.7 +/-    1.06      27.8 +/-    1.06  0.060 / 0.080
G18     275.0          58.7               13.3 +/-    0.99      15.3 +/-    0.99  0.100 / 0.250
G20     44.1           46.9               11.7 +/-    1.08      15.4 +/-    1.08  0.100 / 0.230
G21     342.5          64.4               11.5 +/-    0.80      12.6 +/-    0.80  0.090 / 0.340
G26     269.8          14.0               12.9 +/-    1.39      32.7 +/-    1.39  0.110 / 0.330
G29     162.7          40.4               14.9 +/-    0.68      21.6 +/-    0.68  0.110 / 0.140