PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-15:13:10
G01     314.6          25.9                6.4 +/-    1.81      12.3 +/-    1.81  0.110 / 0.140
G10     93.9           47.5                7.2 +/-    0.76       9.3 +/-    0.76  0.080 / 0.120
G11     296.1          25.1                5.8 +/-    1.93      11.4 +/-    1.93  0.030 / 0.040
G14     324.0          70.3                5.9 +/-    0.35       6.3 +/-    0.35  0.040 / 0.040
G22     305.9          19.4                6.0 +/-    2.08      13.4 +/-    2.08  0.020 / 0.040
G25     92.9           13.0                8.1 +/-    2.73      21.1 +/-    2.73  0.030 / 0.040
G31     172.1          54.1                9.3 +/-    0.68      11.2 +/-    0.68  0.150 / 0.270
G32     24.9           59.4                6.2 +/-    0.97       7.1 +/-    0.97  0.180 / 0.250