PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/25-12:58:00
G01     40.6           15.8                5.1 +/-    2.10      12.4 +/-    2.10  0.130 / 0.210
G06     173.7          38.7                7.0 +/-    0.95      10.4 +/-    0.95  0.120 / 0.160
G13     236.9          23.1                5.1 +/-    3.36      10.3 +/-    3.36  0.130 / 0.320
G15     272.3          12.3                4.4 +/-    1.74      11.7 +/-    1.74  0.130 / 0.360
G17     350.1          73.0                6.2 +/-    0.46       6.5 +/-    0.46  0.040 / 0.070
G19     277.5          70.3                5.6 +/-    0.64       5.9 +/-    0.64  0.040 / 0.070
G24     316.9          17.6                6.0 +/-    2.16      14.1 +/-    2.16  0.060 / 0.080
G28     63.1           52.1                4.9 +/-    0.42       6.0 +/-    0.42  0.060 / 0.080
G30     154.6          29.0                6.4 +/-    0.97      11.4 +/-    0.97  0.100 / 0.270