PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-21:43:00
G10     267.3          37.6               16.2 +/-    1.26      24.5 +/-    1.26  0.050 / 0.060
G13     42.4           19.5               13.0 +/-    0.92      29.0 +/-    0.92  0.040 / 0.050
G15     58.9           48.6               15.3 +/-    0.80      19.7 +/-    0.80  0.170 / 0.400
G16     282.3          11.1               14.5 +/-    2.23      39.6 +/-    2.23  0.180 / 0.270
G18     302.1          64.6               14.4 +/-    0.64      15.7 +/-    0.64  0.190 / 0.470
G20     55.0           34.2               12.3 +/-    1.14      19.9 +/-    1.14  0.160 / 0.680
G21     8.7            72.9               15.4 +/-    0.68      16.1 +/-    0.68  0.130 / 0.250
G24     121.1          14.2               19.3 +/-    1.31      48.9 +/-    1.31  0.100 / 0.200
G27     317.5          20.6               11.7 +/-    3.90      25.3 +/-    3.90  0.110 / 0.270
G29     166.3          26.6               19.2 +/-    1.07      36.2 +/-    1.07  0.100 / 0.260