PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/04-20:28:10
G10     256.2          30.3               18.6 +/-    2.02      32.4 +/-    2.02  0.060 / 0.050
G13     49.2           27.4               12.9 +/-    1.53      23.9 +/-    1.53  0.050 / 0.040
G15     74.0           55.1               15.8 +/-    0.62      18.7 +/-    0.62  0.080 / 0.380
G16     293.6          13.4               14.8 +/-    1.74      38.4 +/-    1.74  0.120 / 0.330
G18     280.3          60.1               16.9 +/-    1.02      19.2 +/-    1.02  0.130 / 0.300
G20     47.1           43.3               15.4 +/-    0.64      21.3 +/-    0.64  0.120 / 0.310
G21     346.0          66.1               14.4 +/-    0.99      15.6 +/-    0.99  0.050 / 0.060
G26     266.3          12.7               16.5 +/-    1.76      43.3 +/-    1.76  0.050 / 0.090
G27     321.6          11.7                4.3 +/-   38.75      11.4 +/-   38.75  0.080 / 0.120
G29     164.2          37.8               17.6 +/-    1.25      26.5 +/-    1.25  0.080 / 0.130