PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-21:27:50
G10     268.0          38.0               14.9 +/-    1.30      22.5 +/-    1.30  0.080 / 0.050
G13     42.1           19.0               11.3 +/-    2.72      25.4 +/-    2.72  0.110 / 0.060
G15     58.1           48.0               14.4 +/-    0.65      18.6 +/-    0.65  0.040 / 0.030
G16     281.9          10.9               14.7 +/-    2.03      40.2 +/-    2.03  0.030 / 0.030
G18     303.6          64.9               14.6 +/-    0.69      15.9 +/-    0.69  0.130 / 0.250
G20     55.4           33.8               13.1 +/-    1.45      21.2 +/-    1.45  0.120 / 0.230
G21     11.0           73.2               15.2 +/-    0.74      15.8 +/-    0.74  0.180 / 0.240
G24     120.6          14.5               16.7 +/-    2.02      42.1 +/-    2.02  0.170 / 0.190
G27     317.2          21.1               14.2 +/-    2.24      30.5 +/-    2.24  0.060 / 0.110
G29     166.2          25.8               14.9 +/-    2.14      28.5 +/-    2.14  0.050 / 0.100