PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-19:58:00
G10     260.2          35.4               13.8 +/-    1.17      21.8 +/-    1.17  0.040 / 0.040
G13     45.2           22.2               11.5 +/-    2.23      24.0 +/-    2.23  0.040 / 0.040
G15     68.3           53.8               12.3 +/-    0.41      14.8 +/-    0.41  0.200 / 0.280
G16     285.2          14.5                9.2 +/-    1.54      23.2 +/-    1.54  0.200 / 0.200
G20     287.0          57.6               12.1 +/-    1.75      14.0 +/-    1.75  0.040 / 0.040
G21     347.7          66.6               13.6 +/-    0.89      14.7 +/-    0.89  0.040 / 0.040
G24     127.5          10.0               -4.9 +/-   40.82     -13.7 +/-   40.82  0.200 / 0.350
G26     258.8          11.1               10.9 +/-    3.36      29.8 +/-    3.36  0.210 / 0.400
G27     321.4          13.0                9.6 +/-    2.07      25.0 +/-    2.07  0.130 / 0.220
G29     166.2          39.3               15.0 +/-    1.65      22.1 +/-    1.65  0.120 / 0.230