PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-00:42:40
G10     286.8          47.4               10.4 +/-    1.42      13.6 +/-    1.42  0.040 / 0.050
G15     48.2           36.0               10.0 +/-    1.15      15.5 +/-    1.15  0.040 / 0.060
G18     339.1          66.8               11.4 +/-    0.52      12.2 +/-    0.52  0.050 / 0.050
G20     66.9           21.6                8.6 +/-    1.17      18.1 +/-    1.17  0.040 / 0.050
G21     70.0           76.8               12.7 +/-    0.40      13.0 +/-    0.40  0.090 / 0.180
G24     106.2          23.4               13.0 +/-    1.03      26.5 +/-    1.03  0.080 / 0.190
G27     305.8          31.8               11.0 +/-    1.30      18.6 +/-    1.30  0.060 / 0.090
G29     167.4          11.7               12.0 +/-    0.82      32.2 +/-    0.82  0.060 / 0.090
G32     208.6          23.8               11.4 +/-    3.16      22.9 +/-    3.16  0.090 / 0.280