PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/20-00:57:40
G01     88.8           32.1                8.7 +/-    0.84      14.6 +/-    0.84  0.040 / 0.050
G07     126.5          44.8               10.4 +/-    0.77      14.0 +/-    0.77  0.040 / 0.040
G11     70.3           41.0                7.8 +/-    0.63      11.1 +/-    0.63  0.040 / 0.060
G13     294.0          35.8                9.2 +/-    1.00      14.4 +/-    1.00  0.040 / 0.050
G15     314.0          11.1                5.0 +/-   12.51      13.5 +/-   12.51  0.070 / 0.110
G17     215.9          53.0               10.5 +/-    1.17      12.8 +/-    1.17  0.080 / 0.100
G19     215.2          28.5               10.1 +/-    2.56      18.3 +/-    2.56  0.050 / 0.110
G28     352.9          61.6                6.0 +/-    1.04       6.7 +/-    1.04  0.050 / 0.100
G30     113.0          70.8                9.3 +/-    0.87       9.8 +/-    0.87  0.030 / 0.060