PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-16:12:50
G01     60.8           30.4                9.2 +/-    0.81      15.9 +/-    0.81  0.040 / 0.050
G07     141.0          19.3               11.5 +/-    2.11      25.8 +/-    2.11  0.040 / 0.040
G11     48.4           24.9                8.8 +/-    1.73      17.3 +/-    1.73  0.080 / 0.170
G13     263.0          36.5               11.9 +/-    2.34      18.3 +/-    2.34  0.090 / 0.160
G15     294.6          16.4                8.3 +/-    1.35      19.9 +/-    1.35  0.150 / 0.250
G17     249.1          73.8               11.7 +/-    0.57      12.1 +/-    0.57  0.110 / 0.200
G18     42.2           12.9                8.0 +/-    1.36      20.8 +/-    1.36  0.020 / 0.040
G19     230.5          50.6               13.1 +/-    2.22      16.4 +/-    2.22  0.030 / 0.030
G28     23.4           59.6               10.1 +/-    0.96      11.5 +/-    0.96  0.090 / 0.120
G30     142.4          51.2               11.3 +/-    1.15      14.0 +/-    1.15  0.060 / 0.130