PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-22:27:30
G07     314.8          50.1                7.8 +/-    1.02       9.8 +/-    1.02  0.040 / 0.090
G08     122.3          45.4               10.9 +/-    1.05      14.6 +/-    1.05  0.050 / 0.070
G09     268.3          82.3                8.9 +/-    0.63       9.0 +/-    0.63  0.120 / 0.520
G16     43.0           19.1                5.9 +/-    0.76      13.3 +/-    0.76  0.120 / 0.440
G23     149.0          55.0                9.1 +/-    0.80      10.8 +/-    0.80  0.040 / 0.060
G27     69.1           36.1                7.8 +/-    0.45      12.1 +/-    0.45  0.030 / 0.060
G28     228.2          19.2                8.1 +/-    6.70      18.2 +/-    6.70  0.050 / 0.050
G30     293.4          30.0                6.7 +/-    1.23      11.7 +/-    1.23  0.040 / 0.060