PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-12:43:10
G07     356.2          64.5                6.4 +/-    0.69       7.0 +/-    0.69  0.120 / 0.150
G08     87.5           53.3                7.0 +/-    0.55       8.5 +/-    0.55  0.090 / 0.190
G09     185.4          65.8                7.4 +/-    0.39       8.0 +/-    0.39  0.140 / 0.370
G11     140.0          19.4                7.1 +/-    1.92      15.8 +/-    1.92  0.160 / 0.290
G23     156.7          30.0                6.7 +/-    0.99      11.7 +/-    0.99  0.030 / 0.040
G27     48.8           27.6                4.4 +/-    1.96       8.1 +/-    1.96  0.030 / 0.030
G28     242.0          30.6                6.8 +/-    1.51      11.7 +/-    1.51  0.090 / 0.180
G30     310.1          42.8                5.0 +/-    0.82       7.0 +/-    0.82  0.100 / 0.120