PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-23:42:50
G10     264.1          35.6               15.6 +/-    1.34      24.5 +/-    1.34  0.130 / 0.470
G13     43.9           21.8               12.4 +/-    2.00      26.1 +/-    2.00  0.140 / 0.420
G15     63.5           51.8               15.6 +/-    1.11      19.2 +/-    1.11  0.050 / 0.100
G16     283.9          12.1               14.8 +/-    3.23      39.3 +/-    3.23  0.040 / 0.100
G18     294.0          63.0               14.8 +/-    0.68      16.4 +/-    0.68  0.040 / 0.040
G20     53.3           35.8               13.1 +/-    0.95      20.5 +/-    0.95  0.050 / 0.040
G21     357.9          70.6               14.4 +/-    0.54      15.2 +/-    0.54  0.120 / 0.160
G24     123.6          12.3               11.1 +/-   28.04      29.4 +/-   28.04  0.110 / 0.170
G27     318.9          18.3               12.3 +/-    0.99      28.2 +/-    0.99  0.090 / 0.260
G29     166.6          31.0               15.3 +/-    0.67      26.2 +/-    0.67  0.070 / 0.270