PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-19:27:30
G07     125.3          40.2               14.4 +/-    0.40      20.8 +/-    0.40  0.070 / 0.170
G11     68.6           40.1               12.0 +/-    0.44      17.5 +/-    0.44  0.060 / 0.180
G13     295.4          36.4               14.8 +/-    1.19      22.8 +/-    1.19  0.030 / 0.040
G17     212.5          52.8               17.8 +/-    0.47      21.7 +/-    0.47  0.030 / 0.040
G18     63.0           23.2               10.1 +/-    0.72      20.5 +/-    0.72  0.070 / 0.140
G19     213.3          26.2               18.8 +/-    3.10      35.8 +/-    3.10  0.090 / 0.160
G28     336.5          61.5               12.9 +/-    0.66      14.4 +/-    0.66  0.080 / 0.160
G30     103.6          75.3               14.9 +/-    0.31      15.3 +/-    0.31  0.070 / 0.140