PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-01:58:00
G10     266.0          36.7               11.8 +/-    1.24      18.2 +/-    1.24  0.090 / 0.090
G13     42.8           20.2                7.1 +/-    0.88      15.5 +/-    0.88  0.070 / 0.060
G15     62.5           51.9                9.5 +/-    1.22      11.7 +/-    1.22  0.050 / 0.050
G16     281.1          11.7               11.8 +/-    1.86      31.7 +/-    1.86  0.060 / 0.050
G18     296.0          63.0               10.5 +/-    1.24      11.7 +/-    1.24  0.050 / 0.120
G20     54.8           33.8                5.9 +/-    0.76       9.6 +/-    0.76  0.040 / 0.110
G21     360.0          71.4               11.4 +/-    0.90      11.9 +/-    0.90  0.190 / 0.350
G24     122.1          13.4               10.6 +/-    2.01      27.4 +/-    2.01  0.190 / 0.370
G27     318.1          19.7               10.0 +/-    3.10      22.2 +/-    3.10  0.120 / 0.230
G29     167.4          30.2               12.1 +/-    1.00      21.1 +/-    1.00  0.120 / 0.290