PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/08-12:43:00
G07     36.4           68.5                5.6 +/-    0.98       6.0 +/-    0.98  0.090 / 0.160
G08     61.8           48.3                3.8 +/-    1.54       4.9 +/-    1.54  0.100 / 0.170
G09     179.9          47.6                6.7 +/-    0.94       8.7 +/-    0.94  0.080 / 0.120
G11     127.5          30.3                6.6 +/-    1.66      11.5 +/-    1.66  0.080 / 0.110
G18     111.0          11.8                5.6 +/-    3.19      15.1 +/-    3.19  0.030 / 0.040
G23     159.0          13.5                3.5 +/-    2.49       9.1 +/-    2.49  0.030 / 0.030
G27     39.7           15.6                4.3 +/-    2.66      10.4 +/-    2.66  0.110 / 0.300
G28     258.1          42.2                6.8 +/-    2.90       9.6 +/-    2.90  0.100 / 0.260
G30     324.5          54.5                4.0 +/-    0.64       4.8 +/-    0.64  0.140 / 0.300