PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-04:27:30
G08     306.6          19.9                6.4 +/-    1.55      14.1 +/-    1.55  0.130 / 0.200
G10     340.2          61.1                6.5 +/-    0.45       7.3 +/-    0.45  0.090 / 0.160
G14     220.6          31.6                7.9 +/-    1.98      13.4 +/-    1.98  0.050 / 0.070
G20     38.4           61.0                9.2 +/-    0.99      10.4 +/-    0.99  0.100 / 0.090
G21     138.2          53.9                8.5 +/-    0.30      10.2 +/-    0.30  0.040 / 0.060
G24     68.3           29.1                4.4 +/-    1.46       7.9 +/-    1.46  0.040 / 0.040
G27     269.4          36.6                7.8 +/-    2.11      12.0 +/-    2.11  0.110 / 0.190
G32     227.5          58.3                8.8 +/-    2.01      10.2 +/-    2.01  0.110 / 0.200