PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/23-09:27:30
G02     255.6          79.6                7.4 +/-    0.56       7.5 +/-    0.56  0.130 / 0.230
G05     172.9          16.2                7.7 +/-    1.25      18.5 +/-    1.25  0.130 / 0.170
G06     39.9           55.3                6.3 +/-    0.46       7.5 +/-    0.46  0.040 / 0.040
G12     322.1          57.6                4.4 +/-    0.74       5.1 +/-    0.74  0.040 / 0.060
G17     72.5           20.4                5.9 +/-    0.94      12.9 +/-    0.94  0.040 / 0.030
G19     60.5           35.1                5.2 +/-    0.72       8.3 +/-    0.72  0.030 / 0.030
G24     244.3          33.3                9.0 +/-    1.74      14.7 +/-    1.74  0.050 / 0.090
G25     316.5          14.0                4.0 +/-    4.72      10.1 +/-    4.72  0.050 / 0.090