PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-07:12:30
G02     214.6          61.6                7.6 +/-    1.02       8.5 +/-    1.02  0.130 / 0.410
G06     69.1           79.4                5.4 +/-    0.61       5.5 +/-    0.61  0.170 / 0.520
G12     318.0          33.8                3.5 +/-    1.46       5.6 +/-    1.46  0.080 / 0.060
G17     57.0           32.8                2.8 +/-    0.69       4.7 +/-    0.69  0.070 / 0.080
G19     39.8           48.9                3.8 +/-    1.06       4.9 +/-    1.06  0.040 / 0.070
G24     267.9          41.5                5.7 +/-    1.27       8.0 +/-    1.27  0.050 / 0.090
G28     122.5          13.4                6.9 +/-    1.93      17.9 +/-    1.93  0.030 / 0.070