PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-14:28:10
G05     49.3           16.7                4.7 +/-    0.62      11.2 +/-    0.62  0.090 / 0.140
G10     238.1          16.9                6.0 +/-    0.78      14.3 +/-    0.78  0.090 / 0.170
G13     70.3           34.7                7.3 +/-    0.61      11.7 +/-    0.61  0.120 / 0.270
G15     113.6          54.5                8.3 +/-    0.58       9.9 +/-    0.58  0.110 / 0.260
G16     310.4          14.0                4.3 +/-    1.51      10.9 +/-    1.51  0.050 / 0.070
G20     252.9          42.3                8.6 +/-    1.44      12.1 +/-    1.44  0.040 / 0.070
G21     317.4          49.3                7.2 +/-    1.71       9.1 +/-    1.71  0.090 / 0.180
G26     284.4          19.7                5.7 +/-    1.28      12.7 +/-    1.28  0.080 / 0.220
G29     156.1          69.9                8.6 +/-    1.80       9.1 +/-    1.80  0.050 / 0.040