PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-22:58:00
G02     254.4          78.8               11.6 +/-    0.43      11.8 +/-    0.43  0.040 / 0.040
G05     169.6          19.9               16.8 +/-    1.23      37.2 +/-    1.23  0.040 / 0.030
G06     40.2           54.1               11.2 +/-    0.41      13.4 +/-    0.41  0.140 / 0.150
G12     321.6          56.4               11.5 +/-    0.74      13.6 +/-    0.74  0.150 / 0.120
G17     72.6           22.6               10.2 +/-    1.88      21.0 +/-    1.88  0.080 / 0.130
G19     59.3           37.9               11.1 +/-    1.36      16.7 +/-    1.36  0.170 / 0.140
G24     241.3          32.8               14.6 +/-    1.20      24.2 +/-    1.20  0.060 / 0.040
G25     317.2          14.6                9.3 +/-    2.87      23.5 +/-    2.87  0.060 / 0.030