PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/12-14:57:40
G07     350.6          63.6                7.9 +/-    0.86       8.8 +/-    0.86  0.080 / 0.070
G08     81.3           52.8               10.1 +/-    0.44      12.3 +/-    0.44  0.070 / 0.090
G09     181.7          61.1               12.2 +/-    1.72      13.8 +/-    1.72  0.040 / 0.040
G11     138.7          20.2               11.3 +/-    1.56      24.7 +/-    1.56  0.040 / 0.040
G23     157.5          27.5               10.3 +/-    1.71      19.1 +/-    1.71  0.050 / 0.090
G27     46.2           25.0                9.2 +/-    1.31      18.0 +/-    1.31  0.050 / 0.110
G28     247.1          38.0               11.2 +/-    0.83      16.8 +/-    0.83  0.050 / 0.130
G30     310.9          42.6                7.3 +/-    1.12      10.2 +/-    1.12  0.050 / 0.110