PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-16:43:10
G07     337.9          60.0               13.2 +/-    0.94      15.0 +/-    0.94  0.110 / 0.240
G08     104.3          50.4               14.2 +/-    0.91      17.8 +/-    0.91  0.100 / 0.240
G09     204.6          78.4               13.3 +/-    0.44      13.5 +/-    0.44  0.070 / 0.130
G11     147.0          11.8               13.8 +/-    2.72      37.0 +/-    2.72  0.070 / 0.110
G16     45.4           12.8                8.2 +/-    1.85      21.5 +/-    1.85  0.040 / 0.080
G23     154.1          45.5               14.5 +/-    0.61      19.4 +/-    0.61  0.040 / 0.080
G27     60.4           34.5               10.7 +/-    0.45      17.1 +/-    0.45  0.050 / 0.100
G28     233.2          22.3               16.0 +/-    2.14      33.4 +/-    2.14  0.050 / 0.080
G30     300.0          34.3               12.5 +/-    1.03      20.1 +/-    1.03  0.030 / 0.040