PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-22:42:50
G02     277.0          81.0               10.7 +/-    0.85      10.8 +/-    0.85  0.030 / 0.040
G05     168.0          23.8               14.5 +/-    1.68      29.1 +/-    1.68  0.020 / 0.040
G06     40.1           49.7               10.3 +/-    0.82      13.0 +/-    0.82  0.070 / 0.120
G12     320.6          61.1                9.2 +/-    0.60      10.3 +/-    0.60  0.070 / 0.120
G17     76.3           19.8               10.8 +/-    0.74      24.0 +/-    0.74  0.070 / 0.110
G19     63.6           35.4               10.5 +/-    0.65      16.5 +/-    0.65  0.060 / 0.140
G24     237.1          30.0               13.0 +/-    2.87      22.7 +/-    2.87  0.030 / 0.040
G25     317.6          18.5                9.2 +/-    1.45      20.9 +/-    1.45  0.030 / 0.040