PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-20:43:10
G10     249.3          24.8               17.6 +/-    1.61      34.6 +/-    1.61  0.040 / 0.060
G13     56.2           32.2               12.8 +/-    0.69      21.5 +/-    0.69  0.040 / 0.060
G15     89.6           57.6               14.9 +/-    0.61      17.3 +/-    0.61  0.150 / 0.470
G16     300.9          13.8               11.9 +/-    2.07      30.4 +/-    2.07  0.120 / 0.440
G18     267.2          55.3               17.8 +/-    1.03      21.1 +/-    1.03  0.140 / 0.370
G20     41.7           49.8               13.7 +/-    0.63      17.3 +/-    0.63  0.130 / 0.310
G21     333.9          60.4               16.0 +/-    1.26      18.1 +/-    1.26  0.050 / 0.120
G26     273.3          15.7               15.0 +/-    3.79      36.8 +/-    3.79  0.050 / 0.130
G29     162.3          46.9               15.5 +/-    0.56      20.4 +/-    0.56  0.050 / 0.070