PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/22-15:13:00
G01     41.7           17.4                5.8 +/-    2.62      13.5 +/-    2.62  0.260 / 0.390
G06     174.6          36.2                8.4 +/-    1.19      13.1 +/-    1.19  0.290 / 0.360
G13     238.7          24.3                7.5 +/-    1.85      15.0 +/-    1.85  0.030 / 0.030
G15     273.2          13.0                5.8 +/-    1.32      15.2 +/-    1.32  0.030 / 0.020
G17     344.7          74.2                7.8 +/-    0.28       8.0 +/-    0.28  0.050 / 0.060
G19     271.2          69.1                6.9 +/-    0.69       7.3 +/-    0.69  0.060 / 0.060
G24     317.3          16.5                5.7 +/-    2.86      13.7 +/-    2.86  0.040 / 0.030
G28     61.0           52.5                7.2 +/-    1.50       8.9 +/-    1.50  0.040 / 0.040
G30     153.6          29.3                8.6 +/-    1.30      15.3 +/-    1.30  0.070 / 0.110