PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/15-17:43:10
G01     317.4          23.1                5.3 +/-    1.68      10.7 +/-    1.68  0.170 / 0.240
G08     253.9          12.0                5.3 +/-   18.03      14.1 +/-   18.03  0.140 / 0.370
G10     85.4           49.4                8.7 +/-    0.89      11.1 +/-    0.89  0.040 / 0.050
G11     303.9          21.1                5.3 +/-    1.92      11.3 +/-    1.92  0.050 / 0.050
G14     294.2          69.3                6.0 +/-    0.82       6.3 +/-    0.82  0.220 / 0.340
G20     109.3          23.6                8.8 +/-    1.27      17.7 +/-    1.27  0.230 / 0.380
G22     302.5          11.6                2.5 +/-   11.46       6.9 +/-   11.46  0.050 / 0.040
G31     175.7          44.4                9.3 +/-    0.36      12.6 +/-    0.36  0.040 / 0.040
G32     16.5           64.3                7.1 +/-    0.89       7.7 +/-    0.89  0.060 / 0.050