PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-21:43:10
G10     251.9          26.9               14.4 +/-    1.34      26.9 +/-    1.34  0.110 / 0.310
G13     53.4           30.6               12.4 +/-    0.71      21.5 +/-    0.71  0.130 / 0.340
G15     84.1           57.3               12.8 +/-    0.49      14.9 +/-    0.49  0.080 / 0.300
G16     297.4          14.0                9.1 +/-    2.34      23.2 +/-    2.34  0.080 / 0.320
G18     271.5          56.9               13.5 +/-    1.14      15.8 +/-    1.14  0.050 / 0.050
G20     44.1           46.8               11.1 +/-    0.43      14.6 +/-    0.43  0.040 / 0.050
G21     337.2          62.2               12.3 +/-    0.52      13.7 +/-    0.52  0.060 / 0.070
G26     269.8          14.7               13.8 +/-    1.25      34.6 +/-    1.25  0.060 / 0.070
G29     163.5          44.2               13.6 +/-    1.24      18.6 +/-    1.24  0.040 / 0.060