PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-00:57:40
G10     286.0          47.0                7.9 +/-    1.45      10.4 +/-    1.45  0.040 / 0.040
G15     48.5           36.7                8.0 +/-    1.06      12.3 +/-    1.06  0.050 / 0.050
G18     337.3          66.8                9.0 +/-    0.42       9.7 +/-    0.42  0.080 / 0.220
G20     66.5           22.0                7.0 +/-    1.16      14.6 +/-    1.16  0.110 / 0.210
G21     66.8           77.0               10.3 +/-    0.64      10.5 +/-    0.64  0.030 / 0.050
G24     106.8          23.0               10.5 +/-    1.16      21.5 +/-    1.16  0.040 / 0.060
G27     306.4          31.5                7.7 +/-    1.08      13.1 +/-    1.08  0.080 / 0.110
G29     167.5          12.4               10.5 +/-    2.20      27.9 +/-    2.20  0.060 / 0.090
G32     208.4          23.4               11.9 +/-    2.92      24.1 +/-    2.92  0.070 / 0.290