PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-21:27:50
G10     261.1          34.7               13.1 +/-    1.28      21.0 +/-    1.28  0.070 / 0.060
G13     44.9           22.3                9.9 +/-    0.78      20.6 +/-    0.78  0.060 / 0.060
G15     72.8           57.3               12.3 +/-    0.51      14.3 +/-    0.51  0.100 / 0.230
G16     283.7          13.9               12.1 +/-    1.64      30.8 +/-    1.64  0.100 / 0.250
G20     287.0          57.5               13.2 +/-    1.27      15.4 +/-    1.27  0.130 / 0.370
G21     350.4          68.0               11.4 +/-    0.97      12.2 +/-    0.97  0.130 / 0.400
G24     122.9          11.1               15.8 +/-    2.20      43.1 +/-    2.20  0.080 / 0.290
G26     257.2          10.5               13.8 +/-    2.81      38.1 +/-    2.81  0.100 / 0.300
G27     321.2          13.5                9.7 +/-    3.31      25.1 +/-    3.31  0.130 / 0.350
G29     167.3          38.0               14.4 +/-    0.87      21.6 +/-    0.87  0.110 / 0.370