PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/06-21:27:30
G02     52.4           39.8                9.3 +/-    1.96      13.6 +/-    1.96  0.050 / 0.080
G05     78.1           69.5               11.4 +/-    0.94      12.1 +/-    0.94  0.080 / 0.080
G12     185.9          38.9               14.7 +/-    1.33      21.8 +/-    1.33  0.180 / 0.330
G13     134.8          10.6                5.1 +/-   31.11      14.2 +/-   31.11  0.130 / 0.290
G20     203.6          54.0              -29.7 +/-   61.23     -35.8 +/-   61.23  0.040 / 0.080
G21     265.6          13.2               17.7 +/-    5.34      45.8 +/-    5.34  0.040 / 0.070
G25     238.4          55.6               13.6 +/-    3.93      16.1 +/-    3.93  0.050 / 0.040
G29     325.3          50.3               12.1 +/-    0.88      15.2 +/-    0.88  0.090 / 0.090