PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-19:57:40
G10     254.9          31.7               14.9 +/-    2.02      25.1 +/-    2.02  0.050 / 0.050
G13     49.0           25.9               11.9 +/-    1.78      22.8 +/-    1.78  0.050 / 0.050
G15     77.9           56.6               12.2 +/-    0.60      14.3 +/-    0.60  0.130 / 0.200
G16     290.6          15.5               11.1 +/-    1.57      27.3 +/-    1.57  0.150 / 0.220
G20     277.9          54.5               13.1 +/-    3.10      15.7 +/-    3.10  0.040 / 0.030
G21     339.4          62.7               13.2 +/-    0.72      14.6 +/-    0.72  0.040 / 0.040
G26     263.7          13.6               11.4 +/-    2.36      29.3 +/-    2.36  0.140 / 0.420
G29     165.0          45.3               13.8 +/-    0.92      18.5 +/-    0.92  0.210 / 0.470