PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/06-13:57:40
G02     214.1          53.8                7.7 +/-    0.79       9.3 +/-    0.79  0.050 / 0.080
G06     67.4           76.2                6.9 +/-    0.91       7.1 +/-    0.91  0.050 / 0.080
G12     316.9          33.0                4.7 +/-    1.56       7.7 +/-    1.56  0.100 / 0.320
G17     52.3           36.7                5.8 +/-    0.30       8.9 +/-    0.30  0.080 / 0.280
G19     36.7           50.1                5.5 +/-    0.58       7.0 +/-    0.58  0.040 / 0.080
G24     271.6          41.5                5.0 +/-    0.98       7.1 +/-    0.98  0.040 / 0.070
G28     117.9          22.5                5.9 +/-    1.38      12.2 +/-    1.38  0.040 / 0.040