PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/26-08:58:00
G01     89.6           30.9                5.1 +/-    0.48       8.8 +/-    0.48  0.040 / 0.040
G07     124.5          44.9                7.8 +/-    0.58      10.5 +/-    0.58  0.050 / 0.060
G08     42.2           10.3                2.9 +/-    3.79       7.9 +/-    3.79  0.040 / 0.050
G11     71.0           42.2                5.1 +/-    1.07       7.1 +/-    1.07  0.050 / 0.050
G13     294.8          37.0                8.2 +/-    3.07      12.6 +/-    3.07  0.090 / 0.130
G17     212.7          50.5                7.9 +/-    0.83       9.8 +/-    0.83  0.120 / 0.160
G18     64.1           24.0                4.5 +/-    1.46       9.0 +/-    1.46  0.120 / 0.290
G19     213.0          28.1                6.4 +/-    2.43      11.7 +/-    2.43  0.190 / 0.270
G28     330.8          60.9                4.5 +/-    0.68       5.0 +/-    0.68  0.030 / 0.020
G30     95.5           78.8                6.3 +/-    0.22       6.4 +/-    0.22  0.020 / 0.030