PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/23-09:27:40
G02     255.6          79.6                7.0 +/-    0.42       7.1 +/-    0.42  0.190 / 0.440
G05     172.9          16.2                5.6 +/-    2.59      13.5 +/-    2.59  0.130 / 0.420
G06     39.9           55.3                5.6 +/-    0.80       6.7 +/-    0.80  0.030 / 0.050
G12     322.1          57.6                6.2 +/-    0.80       7.1 +/-    0.80  0.040 / 0.030
G17     72.5           20.4                5.0 +/-    1.10      10.9 +/-    1.10  0.070 / 0.140
G19     60.5           35.1                7.1 +/-    1.40      11.2 +/-    1.40  0.070 / 0.140
G24     244.3          33.3                7.6 +/-    1.75      12.4 +/-    1.75  0.030 / 0.030
G25     316.5          14.0                3.0 +/-    1.92       7.6 +/-    1.92  0.030 / 0.030