PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-19:27:30
G10     249.4          27.5               13.3 +/-    0.93      24.6 +/-    0.93  0.050 / 0.050
G13     54.2           29.4                9.3 +/-    0.76      16.5 +/-    0.76  0.040 / 0.060
G15     89.7           58.0               11.8 +/-    0.34      13.6 +/-    0.34  0.060 / 0.180
G16     296.6          15.9               10.5 +/-    3.41      25.5 +/-    3.41  0.070 / 0.160
G20     269.2          50.9               12.4 +/-    0.62      15.5 +/-    0.62  0.200 / 0.700
G21     331.7          58.5               10.0 +/-    0.95      11.5 +/-    0.95  0.250 / 1.010
G26     269.4          16.0               12.9 +/-    2.48      31.4 +/-    2.48  0.030 / 0.050
G29     163.2          52.3               14.1 +/-    1.30      17.3 +/-    1.30  0.040 / 0.040