PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-20:57:20
G02     25.0           61.7               11.3 +/-    0.93      12.7 +/-    0.93  0.030 / 0.040
G05     148.1          56.5               13.3 +/-    0.53      15.7 +/-    0.53  0.030 / 0.040
G06     50.9           19.3               10.0 +/-    2.19      22.4 +/-    2.19  0.080 / 0.110
G12     200.9          72.9               13.2 +/-    0.49      13.7 +/-    0.49  0.070 / 0.080
G19     93.8           16.0               11.5 +/-    0.97      27.9 +/-    0.97  0.160 / 0.330
G25     304.9          49.1               12.1 +/-    3.73      15.4 +/-    3.73  0.090 / 0.280
G29     302.2          22.2               11.8 +/-    1.79      24.6 +/-    1.79  0.030 / 0.030