PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-23:12:50
G10     265.3          36.4               13.1 +/-    1.00      20.3 +/-    1.00  0.040 / 0.060
G13     43.3           21.0               10.8 +/-    1.56      23.3 +/-    1.56  0.040 / 0.050
G15     61.6           50.7               13.9 +/-    1.03      17.4 +/-    1.03  0.140 / 0.450
G16     283.0          11.7               11.9 +/-    1.74      31.8 +/-    1.74  0.150 / 0.380
G18     296.9          63.6               12.0 +/-    0.79      13.2 +/-    0.79  0.140 / 0.570
G20     54.0           35.0               11.1 +/-    1.66      17.6 +/-    1.66  0.150 / 0.520
G21     1.4            71.5               12.6 +/-    1.01      13.2 +/-    1.01  0.060 / 0.110
G24     122.6          13.1               15.2 +/-    2.30      39.6 +/-    2.30  0.060 / 0.100
G27     318.4          19.2               10.9 +/-    2.10      24.4 +/-    2.10  0.120 / 0.230
G29     166.6          29.5               14.6 +/-    1.65      25.9 +/-    1.65  0.120 / 0.230