PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-23:42:30
G02     223.0          68.0               11.1 +/-    0.82      11.9 +/-    0.82  0.040 / 0.040
G06     46.2           67.6                9.8 +/-    0.46      10.5 +/-    0.46  0.040 / 0.050
G12     320.5          42.7               11.3 +/-    1.10      15.7 +/-    1.10  0.070 / 0.090
G17     61.1           31.2               10.4 +/-    1.79      17.7 +/-    1.79  0.050 / 0.080
G19     45.9           45.7               10.7 +/-    0.53      14.3 +/-    0.53  0.030 / 0.030
G24     256.3          39.5               13.7 +/-    2.00      20.1 +/-    2.00  0.020 / 0.030