PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-23:27:30
G02     12.6           70.0               12.9 +/-    0.45      13.6 +/-    0.45  0.030 / 0.030
G05     157.1          45.5               17.6 +/-    0.82      23.6 +/-    0.82  0.030 / 0.030
G06     45.6           29.3                9.8 +/-    0.84      17.5 +/-    0.84  0.150 / 0.270
G12     265.3          80.2               13.3 +/-    0.42      13.5 +/-    0.42  0.250 / 0.290
G19     84.3           22.1               12.4 +/-    1.19      25.9 +/-    1.19  0.040 / 0.060
G24     219.8          14.8               21.2 +/-    3.37      53.0 +/-    3.37  0.030 / 0.060
G25     313.9          38.5               13.5 +/-    1.92      20.1 +/-    1.92  0.060 / 0.090
G29     294.0          14.7               15.7 +/-    2.81      39.4 +/-    2.81  0.060 / 0.090