PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-13:12:30
G02     207.7          42.7                8.0 +/-    1.00      11.2 +/-    1.00  0.040 / 0.050
G06     125.4          77.8                7.8 +/-    0.75       8.0 +/-    0.75  0.040 / 0.050
G12     312.2          23.7                5.4 +/-    1.77      10.9 +/-    1.77  0.070 / 0.080
G17     42.8           43.9                6.1 +/-    1.73       8.3 +/-    1.73  0.060 / 0.080
G19     22.3           57.7                5.8 +/-    1.15       6.7 +/-    1.15  0.030 / 0.030
G24     286.7          40.7                1.4 +/-    4.80       2.0 +/-    4.80  0.030 / 0.020
G28     108.5          30.6                6.2 +/-    1.49      10.7 +/-    1.49  0.050 / 0.050