PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/08-09:57:30
G07     351.1          63.6                5.5 +/-    0.33       6.0 +/-    0.33  0.080 / 0.170
G08     92.9           54.1                5.6 +/-    0.57       6.8 +/-    0.57  0.090 / 0.150
G09     184.5          66.3                5.8 +/-    0.44       6.2 +/-    0.44  0.030 / 0.040
G11     141.4          18.6                4.6 +/-    2.16      10.5 +/-    2.16  0.040 / 0.040
G23     156.4          31.0                4.8 +/-    0.88       8.2 +/-    0.88  0.100 / 0.110
G27     49.4           28.0                3.6 +/-    1.73       6.6 +/-    1.73  0.100 / 0.190
G28     240.9          29.1                6.5 +/-    1.47      11.5 +/-    1.47  0.040 / 0.030
G30     307.8          40.3                4.7 +/-    1.60       6.8 +/-    1.60  0.040 / 0.030