PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-19:43:00
G10     247.3          25.7               15.9 +/-    1.79      30.5 +/-    1.79  0.040 / 0.060
G13     56.5           30.7               13.2 +/-    1.54      22.7 +/-    1.54  0.040 / 0.070
G15     95.5           58.2               15.3 +/-    0.81      17.7 +/-    0.81  0.050 / 0.150
G16     299.1          15.8               10.8 +/-    4.47      26.4 +/-    4.47  0.060 / 0.180
G20     265.9          49.1               14.4 +/-    1.12      18.3 +/-    1.12  0.240 / 0.730
G21     328.9          56.7               13.4 +/-    0.82      15.7 +/-    0.82  0.200 / 0.720
G26     271.7          16.9               15.2 +/-    2.57      36.2 +/-    2.57  0.030 / 0.040
G29     162.3          55.0               16.4 +/-    0.82      19.5 +/-    0.82  0.030 / 0.050