PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-01:42:50
G02     17.2           67.2                7.2 +/-    1.10       7.8 +/-    1.10  0.140 / 0.440
G05     155.3          47.8               12.8 +/-    1.06      16.7 +/-    1.06  0.120 / 0.530
G06     44.9           31.2                6.6 +/-    1.34      11.2 +/-    1.34  0.030 / 0.020
G12     271.0          78.6                8.5 +/-    0.96       8.7 +/-    0.96  0.030 / 0.020
G19     86.8           18.8                6.9 +/-    3.36      15.7 +/-    3.36  0.100 / 0.220
G24     217.5          13.0               11.8 +/-    1.94      30.9 +/-    1.94  0.100 / 0.170
G25     312.0          42.0                7.3 +/-    1.19      10.3 +/-    1.19  0.050 / 0.060
G29     297.8          21.0                7.2 +/-    1.75      15.6 +/-    1.75  0.060 / 0.090