PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/17-14:43:00
G01     312.7          28.8                6.2 +/-    1.00      11.1 +/-    1.00  0.040 / 0.030
G10     98.1           44.1                9.5 +/-    0.90      12.9 +/-    0.90  0.030 / 0.020
G11     288.4          27.8                4.2 +/-    1.08       7.6 +/-    1.08  0.040 / 0.050
G14     341.4          69.8                6.3 +/-    0.54       6.7 +/-    0.54  0.060 / 0.040
G18     284.2          50.5                8.6 +/-    5.43      10.8 +/-    5.43  0.120 / 0.100
G20     115.8          19.2                8.9 +/-    2.30      20.1 +/-    2.30  0.120 / 0.120
G22     307.6          21.9                5.5 +/-    1.25      11.6 +/-    1.25  0.040 / 0.040
G25     86.5           13.6                8.1 +/-    1.74      20.8 +/-    1.74  0.030 / 0.040
G31     175.8          53.8               10.6 +/-    0.90      12.8 +/-    0.90  0.040 / 0.050
G32     23.0           60.2                7.1 +/-    1.28       8.1 +/-    1.28  0.040 / 0.060