PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-14:27:50
G01     117.9          17.8                7.9 +/-    2.17      18.3 +/-    2.17  0.030 / 0.050
G07     88.6           62.4                9.9 +/-    0.42      11.0 +/-    0.42  0.030 / 0.040
G08     45.3           32.7                7.9 +/-    0.95      13.2 +/-    0.95  0.040 / 0.060
G09     177.5          26.9               10.2 +/-    1.96      19.0 +/-    1.96  0.040 / 0.070
G11     105.7          40.9               10.6 +/-    1.27      15.2 +/-    1.27  0.050 / 0.080
G13     317.1          20.7                8.6 +/-    2.41      18.6 +/-    2.41  0.050 / 0.080
G17     201.7          23.0                9.8 +/-    2.21      20.0 +/-    2.21  0.110 / 0.340
G18     92.5           20.9                8.5 +/-    0.74      18.4 +/-    0.74  0.110 / 0.360
G28     285.2          53.8                9.2 +/-    0.59      11.1 +/-    0.59  0.090 / 0.140
G30     353.2          70.9                9.2 +/-    1.55       9.7 +/-    1.55  0.090 / 0.190