PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/07-14:57:40
G07     334.6          58.6               11.2 +/-    0.58      12.9 +/-    0.58  0.030 / 0.040
G08     98.6           52.6               11.2 +/-    0.73      13.7 +/-    0.73  0.030 / 0.040
G09     188.0          71.6               13.0 +/-    0.57      13.6 +/-    0.57  0.030 / 0.040
G11     145.1          14.1               10.4 +/-    1.46      26.5 +/-    1.46  0.030 / 0.030
G23     155.0          36.9               11.7 +/-    0.60      18.0 +/-    0.60  0.060 / 0.090
G27     53.5           30.8               10.2 +/-    2.34      17.6 +/-    2.34  0.080 / 0.080
G28     238.6          30.8               13.5 +/-    1.87      23.3 +/-    1.87  0.060 / 0.060
G30     303.3          36.3               12.2 +/-    1.09      19.0 +/-    1.09  0.060 / 0.060