PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-01:28:10
G10     265.8          36.7               10.0 +/-    1.01      15.4 +/-    1.01  0.080 / 0.090
G13     42.9           20.4                7.1 +/-    1.36      15.5 +/-    1.36  0.070 / 0.120
G15     62.4           51.7                9.0 +/-    0.84      11.2 +/-    0.84  0.050 / 0.040
G16     281.4          11.8                9.5 +/-    1.84      25.6 +/-    1.84  0.050 / 0.040
G18     296.1          63.1                8.5 +/-    0.78       9.4 +/-    0.78  0.050 / 0.090
G20     54.6           34.1                6.2 +/-    1.02       9.9 +/-    1.02  0.040 / 0.110
G21     360.0          71.3               10.2 +/-    0.67      10.7 +/-    0.67  0.170 / 0.420
G24     122.2          13.3                8.6 +/-    1.95      22.4 +/-    1.95  0.220 / 0.360
G27     318.2          19.6                8.6 +/-    2.11      19.1 +/-    2.11  0.100 / 0.220
G29     167.2          30.2                9.4 +/-    0.65      16.4 +/-    0.65  0.090 / 0.210