PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-18:42:40
G01     236.3          25.8                9.9 +/-    1.96      19.0 +/-    1.96  0.040 / 0.040
G03     306.5          60.7                9.2 +/-    0.82      10.4 +/-    0.82  0.030 / 0.030
G14     74.6           32.8                7.1 +/-    0.99      11.8 +/-    0.99  0.050 / 0.070
G16     156.4          32.2               11.7 +/-    1.61      19.6 +/-    1.61  0.060 / 0.070
G22     258.7          76.1               10.2 +/-    0.30      10.5 +/-    0.30  0.060 / 0.140
G23     298.5          29.7                8.5 +/-    1.24      15.0 +/-    1.24  0.070 / 0.130
G26     118.3          49.2               10.2 +/-    0.78      12.9 +/-    0.78  0.090 / 0.120
G31     41.5           43.2                6.5 +/-    1.47       9.0 +/-    1.47  0.070 / 0.100
G32     90.0           13.2                9.1 +/-    2.53      23.7 +/-    2.53  0.040 / 0.040