PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/11-13:27:30
G10     246.5          25.3                4.7 +/-    1.33       9.2 +/-    1.33  0.170 / 0.680
G13     57.5           31.0                5.5 +/-    0.54       9.4 +/-    0.54  0.170 / 0.670
G15     90.0           56.4                6.7 +/-    1.04       7.8 +/-    1.04  0.040 / 0.070
G16     299.9          15.9                3.6 +/-    3.65       8.7 +/-    3.65  0.040 / 0.060
G20     266.4          50.7                6.2 +/-    1.40       7.8 +/-    1.40  0.020 / 0.040
G21     330.0          57.3                1.9 +/-    0.48       2.2 +/-    0.48  0.030 / 0.040
G26     273.5          17.1                3.7 +/-    1.47       8.8 +/-    1.47  0.070 / 0.150
G29     162.0          56.9                7.8 +/-    0.66       9.1 +/-    0.66  0.100 / 0.120