PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-23:57:40
G02     261.5          80.0                9.0 +/-    0.70       9.1 +/-    0.70  0.040 / 0.040
G05     169.0          21.1               16.7 +/-    1.13      35.7 +/-    1.13  0.030 / 0.050
G06     40.1           53.2                9.9 +/-    0.51      12.0 +/-    0.51  0.100 / 0.130
G12     321.3          57.1               10.0 +/-    0.62      11.6 +/-    0.62  0.110 / 0.180
G17     73.2           22.5                9.0 +/-    1.11      18.7 +/-    1.11  0.100 / 0.200
G19     60.8           36.9                9.7 +/-    1.15      14.9 +/-    1.15  0.090 / 0.160
G24     240.3          32.0               11.5 +/-    1.89      19.4 +/-    1.89  0.140 / 0.370
G25     317.4          15.6                6.0 +/-    1.68      14.7 +/-    1.68  0.180 / 0.180