PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/25-13:42:50
G02     202.3          23.7                6.2 +/-    1.84      12.5 +/-    1.84  0.090 / 0.140
G06     165.3          61.1                9.0 +/-    0.62      10.1 +/-    0.62  0.070 / 0.140
G17     24.3           57.7                6.7 +/-    0.36       7.8 +/-    0.36  0.050 / 0.090
G19     346.6          69.0                6.2 +/-    0.40       6.6 +/-    0.40  0.050 / 0.110
G24     305.8          32.7                6.1 +/-    2.33      10.2 +/-    2.33  0.030 / 0.040
G28     90.1           41.8                7.1 +/-    0.51      10.0 +/-    0.51  0.040 / 0.040