PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/12-10:43:00
G01     125.0          12.0                3.4 +/-    2.38       9.0 +/-    2.38  0.060 / 0.090
G07     63.4           67.8                4.6 +/-    0.69       4.9 +/-    0.69  0.080 / 0.080
G08     52.1           42.6                2.7 +/-    0.67       3.8 +/-    0.67  0.090 / 0.250
G09     178.0          35.6                4.9 +/-    1.94       7.7 +/-    1.94  0.100 / 0.350
G11     117.9          36.8                5.5 +/-    0.96       8.5 +/-    0.96  0.030 / 0.040
G13     320.4          13.6                1.5 +/-    1.32       3.8 +/-    1.32  0.030 / 0.040
G17     200.9          11.8                2.8 +/-    3.19       7.6 +/-    3.19  0.060 / 0.110
G18     101.9          17.1                3.6 +/-    1.48       8.5 +/-    1.48  0.060 / 0.100
G28     270.7          48.2                5.3 +/-    0.83       6.8 +/-    0.83  0.080 / 0.260
G30     333.7          61.5                3.3 +/-    0.68       3.7 +/-    0.68  0.080 / 0.300