PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-23:27:30
G02     235.6          74.2               11.0 +/-    0.60      11.4 +/-    0.60  0.060 / 0.110
G05     172.0          14.3               12.9 +/-    2.19      32.7 +/-    2.19  0.070 / 0.090
G06     41.1           64.0                9.4 +/-    0.50      10.3 +/-    0.50  0.200 / 0.450
G12     320.5          46.2                7.1 +/-    0.89       9.3 +/-    0.89  0.040 / 0.040
G17     68.5           23.5                9.3 +/-    1.15      18.9 +/-    1.15  0.040 / 0.040
G19     54.1           40.0               10.3 +/-    0.43      15.0 +/-    0.43  0.050 / 0.060
G24     247.0          36.1               12.7 +/-    1.08      19.7 +/-    1.08  0.050 / 0.060
G25     315.8          10.3              -19.5 +/-   10.46     -54.0 +/-   10.46  0.040 / 0.050