PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/28-08:27:40
G07     342.9          61.5                5.3 +/-    0.85       6.0 +/-    0.85  0.030 / 0.050
G08     99.3           53.3                6.7 +/-    0.39       8.2 +/-    0.39  0.040 / 0.050
G09     186.1          70.0                5.7 +/-    0.66       6.0 +/-    0.66  0.080 / 0.080
G11     144.2          16.1                0.4 +/-    4.22       0.9 +/-    4.22  0.070 / 0.090
G23     155.8          35.8                6.3 +/-    0.57       9.8 +/-    0.57  0.070 / 0.200
G27     52.4           30.1                4.3 +/-    0.67       7.6 +/-    0.67  0.080 / 0.190
G28     237.8          25.8                4.5 +/-    3.13       8.7 +/-    3.13  0.080 / 0.090
G30     304.3          37.0                4.3 +/-    0.92       6.6 +/-    0.92  0.050 / 0.100