PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-20:12:50
G01     103.8          26.6               13.8 +/-    0.98      26.0 +/-    0.98  0.040 / 0.040
G07     113.7          50.4               15.1 +/-    0.66      18.9 +/-    0.66  0.030 / 0.050
G08     41.5           17.0               10.5 +/-    1.97      24.8 +/-    1.97  0.060 / 0.050
G09     174.9          12.3               17.1 +/-    1.43      45.2 +/-    1.43  0.060 / 0.050
G11     83.1           42.8               14.9 +/-    0.43      20.7 +/-    0.43  0.270 / 0.390
G13     307.0          31.1               13.4 +/-    0.90      23.0 +/-    0.90  0.240 / 0.440
G17     206.0          41.6               16.9 +/-    0.78      24.0 +/-    0.78  0.060 / 0.140
G18     74.7           23.8               12.9 +/-    1.04      25.9 +/-    1.04  0.070 / 0.140
G28     314.8          60.0               13.1 +/-    0.65      14.9 +/-    0.65  0.030 / 0.030
G30     44.2           79.3               14.2 +/-    1.12      14.4 +/-    1.12  0.030 / 0.020