PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-21:12:30
G02     202.8          33.7               14.9 +/-    1.24      24.2 +/-    1.24  0.080 / 0.280
G06     158.9          68.6               13.9 +/-    0.26      14.8 +/-    0.26  0.140 / 0.290
G12     307.2          15.2                9.8 +/-    2.04      24.4 +/-    2.04  0.120 / 0.080
G17     32.1           52.3               12.3 +/-    1.13      15.1 +/-    1.13  0.100 / 0.100
G19     354.3          66.5               11.5 +/-    0.53      12.4 +/-    0.53  0.040 / 0.030
G24     298.9          37.8               11.7 +/-    2.13      17.7 +/-    2.13  0.030 / 0.030
G28     101.5          31.8               11.7 +/-    0.79      19.7 +/-    0.79  0.030 / 0.040