PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-14:42:40
G01     49.8           25.1                7.9 +/-    2.26      15.4 +/-    2.26  0.130 / 0.350
G06     177.1          24.2                9.0 +/-    2.15      17.9 +/-    2.15  0.140 / 0.400
G07     145.2          10.0               10.2 +/-    1.99      28.5 +/-    1.99  0.040 / 0.030
G11     44.7           16.2                5.5 +/-    3.30      13.2 +/-    3.30  0.030 / 0.030
G13     249.9          31.5                8.0 +/-    2.19      13.6 +/-    2.19  0.050 / 0.050
G15     284.3          15.7                7.0 +/-    1.17      17.1 +/-    1.17  0.040 / 0.050
G17     292.4          77.9                8.4 +/-    0.52       8.6 +/-    0.52  0.040 / 0.050
G19     245.3          60.9                8.5 +/-    0.70       9.5 +/-    0.70  0.050 / 0.040
G28     42.3           56.8                8.2 +/-    0.94       9.6 +/-    0.94  0.120 / 0.210
G30     149.2          41.3                8.2 +/-    1.20      11.7 +/-    1.20  0.100 / 0.260