PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-21:12:30
G10     254.7          30.1               14.0 +/-    2.38      24.4 +/-    2.38  0.120 / 0.500
G13     49.5           26.9                9.6 +/-    2.29      18.0 +/-    2.29  0.130 / 0.480
G15     86.2           59.8               12.8 +/-    0.81      14.6 +/-    0.81  0.050 / 0.050
G16     290.3          15.3               11.2 +/-    1.65      27.6 +/-    1.65  0.040 / 0.050
G20     276.3          53.7               12.9 +/-    3.15      15.6 +/-    3.15  0.080 / 0.140
G21     339.7          63.3               12.3 +/-    0.97      13.6 +/-    0.97  0.100 / 0.170
G26     263.1          13.6               13.2 +/-    2.88      34.0 +/-    2.88  0.030 / 0.030
G29     166.1          45.4               13.6 +/-    0.68      18.3 +/-    0.68  0.030 / 0.030