PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-14:57:50
G01     108.9          23.7               10.6 +/-    1.10      21.3 +/-    1.10  0.050 / 0.080
G07     105.8          55.7               11.1 +/-    0.55      13.2 +/-    0.55  0.030 / 0.060
G08     42.4           24.1                8.1 +/-    1.54      16.1 +/-    1.54  0.050 / 0.080
G09     176.0          17.4               10.8 +/-    1.64      25.2 +/-    1.64  0.040 / 0.080
G11     92.0           43.3                9.6 +/-    0.85      13.3 +/-    0.85  0.040 / 0.040
G13     311.2          27.9                7.2 +/-    1.79      13.2 +/-    1.79  0.030 / 0.040
G17     204.5          33.1               12.3 +/-    1.61      20.2 +/-    1.61  0.080 / 0.170
G18     82.0           23.6                8.1 +/-    1.41      16.4 +/-    1.41  0.080 / 0.140
G28     302.0          57.8                8.5 +/-    1.06       9.9 +/-    1.06  0.070 / 0.110
G30     24.4           77.4                9.3 +/-    0.92       9.5 +/-    0.92  0.080 / 0.120