PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-19:43:00
G05     46.7           25.0               14.6 +/-    2.08      28.5 +/-    2.08  0.040 / 0.080
G13     85.1           37.2               16.8 +/-    0.71      25.6 +/-    0.71  0.040 / 0.100
G15     131.9          48.2               20.4 +/-    1.20      26.4 +/-    1.20  0.220 / 0.340
G18     240.6          38.0               27.5 +/-    2.16      41.3 +/-    2.16  0.170 / 0.410
G20     21.9           71.9               20.7 +/-    0.75      21.6 +/-    0.75  0.090 / 0.210
G21     308.9          44.9               21.8 +/-    1.64      29.5 +/-    1.64  0.100 / 0.190
G25     200.2          13.7               32.3 +/-    2.20      82.8 +/-    2.20  0.050 / 0.040
G26     297.2          18.9               23.1 +/-    1.14      52.2 +/-    1.14  0.050 / 0.040
G29     147.2          73.6               24.8 +/-    0.92      25.8 +/-    0.92  0.060 / 0.120