PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/30-15:28:00
G07     47.2           68.0               10.5 +/-    0.49      11.2 +/-    0.49  0.040 / 0.090
G08     57.4           45.3                9.6 +/-    0.74      12.8 +/-    0.74  0.040 / 0.090
G09     179.9          45.2               11.8 +/-    1.60      15.9 +/-    1.60  0.030 / 0.040
G11     124.6          31.9               11.6 +/-    1.03      19.6 +/-    1.03  0.030 / 0.040
G18     108.5          13.1               10.4 +/-    3.18      27.0 +/-    3.18  0.060 / 0.060
G23     159.9          13.0               10.0 +/-    1.79      26.2 +/-    1.79  0.060 / 0.060
G27     39.0           14.0                7.9 +/-    1.93      20.2 +/-    1.93  0.080 / 0.160
G28     261.4          44.4                9.1 +/-    1.06      12.4 +/-    1.06  0.080 / 0.130
G30     328.9          57.7                9.2 +/-    0.67      10.7 +/-    0.67  0.110 / 0.360