PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-03:27:50
G08     305.6          20.9                6.7 +/-    1.39      14.4 +/-    1.39  0.030 / 0.040
G10     335.4          60.4                6.2 +/-    0.67       7.0 +/-    0.67  0.030 / 0.050
G14     219.8          35.3               10.7 +/-    2.13      16.9 +/-    2.13  0.090 / 0.080
G15     47.2           11.0                5.8 +/-    0.66      15.9 +/-    0.66  0.110 / 0.100
G18     40.3           59.3                7.5 +/-    0.48       8.6 +/-    0.48  0.040 / 0.070
G21     136.4          54.5                9.8 +/-    1.13      11.7 +/-    1.13  0.030 / 0.050
G24     72.3           30.4                7.7 +/-    0.70      13.4 +/-    0.70  0.060 / 0.120
G27     269.2          37.0                9.6 +/-    1.11      14.7 +/-    1.11  0.070 / 0.150
G32     226.2          54.3               10.1 +/-    1.15      12.1 +/-    1.15  0.050 / 0.090