PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-20:58:10
G01     118.6          18.4               14.5 +/-    1.56      33.2 +/-    1.56  0.090 / 0.050
G07     81.4           66.6               12.4 +/-    0.60      13.4 +/-    0.60  0.050 / 0.090
G08     46.1           35.2               10.0 +/-    1.14      15.8 +/-    1.14  0.060 / 0.060
G09     177.5          26.1               14.1 +/-    1.41      26.9 +/-    1.41  0.060 / 0.050
G11     108.8          40.2               13.6 +/-    0.65      19.7 +/-    0.65  0.090 / 0.220
G13     317.6          19.5               10.6 +/-    1.18      23.7 +/-    1.18  0.130 / 0.240
G17     203.1          21.7               16.3 +/-    1.90      34.4 +/-    1.90  0.030 / 0.030
G18     94.2           21.1               11.4 +/-    1.87      24.3 +/-    1.87  0.030 / 0.030
G28     294.8          57.9               12.4 +/-    1.07      14.4 +/-    1.07  0.040 / 0.020
G30     354.1          70.8               12.6 +/-    0.63      13.3 +/-    0.63  0.030 / 0.020