PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-14:27:50
G08     270.0          17.7                6.5 +/-    2.43      15.0 +/-    2.43  0.220 / 0.270
G10     61.0           58.7                5.8 +/-    0.93       6.7 +/-    0.93  0.140 / 0.200
G11     313.3          15.0                3.3 +/-    3.02       8.2 +/-    3.02  0.030 / 0.040
G14     265.2          64.8                6.9 +/-    1.02       7.6 +/-    1.02  0.050 / 0.050
G21     154.0          13.3                6.3 +/-    4.51      16.4 +/-    4.51  0.060 / 0.080
G24     39.9           10.4                6.8 +/-    1.89      18.7 +/-    1.89  0.060 / 0.080
G27     230.8          15.4                7.4 +/-    2.20      18.3 +/-    2.20  0.150 / 0.240
G31     177.8          31.3                9.4 +/-    2.21      16.0 +/-    2.21  0.150 / 0.260
G32     342.6          73.8                6.0 +/-    0.46       6.2 +/-    0.46  0.030 / 0.030