PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/24-11:57:40
G02     203.8          33.3                6.4 +/-    0.95      10.5 +/-    0.95  0.030 / 0.040
G06     155.5          69.8                3.6 +/-    1.06       3.8 +/-    1.06  0.030 / 0.040
G12     307.3          16.4                3.2 +/-    1.85       7.7 +/-    1.85  0.130 / 0.250
G17     34.2           50.5                2.3 +/-    0.62       2.9 +/-    0.62  0.120 / 0.240
G19     5.9            64.3                2.1 +/-    0.87       2.3 +/-    0.87  0.040 / 0.040
G24     298.5          37.0                6.5 +/-    1.53       9.9 +/-    1.53  0.040 / 0.040
G28     98.6           37.4                4.4 +/-    0.54       6.6 +/-    0.54  0.080 / 0.090