PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-06:57:50
G02     16.8           68.6                1.1 +/-    0.97       1.1 +/-    0.97  0.030 / 0.040
G05     157.2          45.3                6.1 +/-    0.76       8.2 +/-    0.76  0.030 / 0.030
G06     44.5           32.9                1.5 +/-    1.02       2.5 +/-    1.02  0.030 / 0.070
G12     278.3          78.3                3.4 +/-    0.53       3.5 +/-    0.53  0.030 / 0.060
G19     85.3           20.3                5.4 +/-    0.93      11.8 +/-    0.93  0.050 / 0.080
G24     221.1          15.3                3.3 +/-    2.06       8.2 +/-    2.06  0.070 / 0.070
G25     314.1          38.3                4.0 +/-    1.60       6.1 +/-    1.60  0.080 / 0.260
G29     295.1          16.9                1.4 +/-    1.68       3.4 +/-    1.68  0.100 / 0.180