PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-23:27:30
G02     257.8          79.5               10.3 +/-    0.52      10.4 +/-    0.52  0.040 / 0.040
G05     169.3          20.5               16.5 +/-    1.58      36.0 +/-    1.58  0.040 / 0.040
G06     40.1           53.6               10.8 +/-    0.50      13.0 +/-    0.50  0.080 / 0.190
G12     321.4          56.7                9.9 +/-    0.79      11.6 +/-    0.79  0.100 / 0.250
G17     72.9           22.5                9.6 +/-    1.23      19.9 +/-    1.23  0.120 / 0.210
G19     60.1           37.4               11.2 +/-    1.40      17.0 +/-    1.40  0.110 / 0.200
G24     240.8          32.4               14.2 +/-    1.08      23.6 +/-    1.08  0.060 / 0.040
G25     317.3          15.1                6.5 +/-    1.99      16.1 +/-    1.99  0.060 / 0.040