PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-18:42:30
G10     249.4          27.5               19.0 +/-    1.02      35.2 +/-    1.02  0.040 / 0.060
G13     54.1           29.4               15.2 +/-    0.56      27.0 +/-    0.56  0.040 / 0.060
G15     88.6           57.7               16.8 +/-    0.68      19.5 +/-    0.68  0.170 / 0.760
G16     296.5          15.9               14.4 +/-    2.24      35.0 +/-    2.24  0.200 / 0.620
G20     269.5          51.1               17.9 +/-    0.71      22.3 +/-    0.71  0.060 / 0.170
G21     331.9          58.5               15.2 +/-    0.63      17.5 +/-    0.63  0.070 / 0.140
G26     269.4          16.0               18.6 +/-    1.91      45.2 +/-    1.91  0.040 / 0.040
G29     163.3          52.5               18.3 +/-    1.43      22.4 +/-    1.43  0.030 / 0.040