PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-11:28:00
G02     201.7          25.3                5.0 +/-    0.85       9.7 +/-    0.85  0.250 / 0.350
G06     164.9          61.3                7.0 +/-    0.92       7.8 +/-    0.92  0.210 / 0.340
G12     302.8          10.6               -5.2 +/-   16.08     -14.4 +/-   16.08  0.100 / 0.130
G17     26.4           56.4                4.2 +/-    0.61       4.9 +/-    0.61  0.070 / 0.110
G19     347.5          69.0                3.8 +/-    0.62       4.1 +/-    0.62  0.090 / 0.350
G24     306.0          32.4                4.5 +/-    3.06       7.4 +/-    3.06  0.120 / 0.330
G28     89.7           42.3                6.1 +/-    0.72       8.5 +/-    0.72  0.030 / 0.040
G30     158.3          10.6                5.4 +/-    3.50      14.7 +/-    3.50  0.040 / 0.040