PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/27-10:57:40
G02     227.7          70.3                5.2 +/-    0.66       5.5 +/-    0.66  0.040 / 0.040
G06     43.6           64.3                5.5 +/-    0.58       6.0 +/-    0.58  0.040 / 0.040
G12     321.3          47.6                5.7 +/-    0.85       7.4 +/-    0.85  0.170 / 0.290
G17     64.4           26.7                4.4 +/-    1.08       8.3 +/-    1.08  0.130 / 0.270
G19     51.2           41.1                4.5 +/-    1.10       6.4 +/-    1.10  0.030 / 0.030
G24     254.8          37.9                5.4 +/-    1.29       8.1 +/-    1.29  0.030 / 0.020
G28     126.7          13.5                7.2 +/-    2.02      18.6 +/-    2.02  0.060 / 0.080