PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-14:28:00
G05     49.1           17.1                4.9 +/-    2.30      11.5 +/-    2.30  0.110 / 0.140
G10     237.8          16.6                7.1 +/-    1.75      16.9 +/-    1.75  0.100 / 0.180
G13     70.8           34.7                8.7 +/-    1.02      14.0 +/-    1.02  0.120 / 0.350
G15     114.4          54.3                7.4 +/-    1.57       8.8 +/-    1.57  0.130 / 0.390
G16     310.8          13.9                5.2 +/-    2.63      13.3 +/-    2.63  0.040 / 0.030
G20     252.4          41.9                8.0 +/-    2.54      11.3 +/-    2.54  0.030 / 0.030
G21     317.0          49.0                6.4 +/-    1.19       8.2 +/-    1.19  0.040 / 0.060
G26     284.9          19.7                5.3 +/-    0.71      11.8 +/-    0.71  0.050 / 0.050
G29     155.8          70.4               10.2 +/-    1.31      10.8 +/-    1.31  0.060 / 0.110