PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/30-12:57:20
G02     37.6           50.9                3.8 +/-    1.11       4.7 +/-    1.11  0.030 / 0.030
G05     140.7          64.5                6.2 +/-    0.74       6.7 +/-    0.74  0.030 / 0.030
G06     56.1           11.5                3.0 +/-    3.07       8.0 +/-    3.07  0.040 / 0.030
G12     188.8          61.1                5.4 +/-    0.66       6.1 +/-    0.66  0.040 / 0.040
G25     290.2          55.6                2.1 +/-    2.15       2.4 +/-    2.15  0.040 / 0.050
G29     309.8          30.4                4.2 +/-    1.10       7.4 +/-    1.10  0.040 / 0.050