PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/18-00:12:50
G02     3.3            74.2                8.6 +/-    0.60       8.9 +/-    0.60  0.020 / 0.030
G05     160.2          40.0               13.5 +/-    1.13      19.7 +/-    1.13  0.020 / 0.030
G06     43.5           34.4                8.0 +/-    0.98      12.8 +/-    0.98  0.030 / 0.060
G12     296.6          76.9                8.7 +/-    0.67       8.9 +/-    0.67  0.040 / 0.060
G17     89.6           10.6               10.4 +/-    1.63      28.6 +/-    1.63  0.050 / 0.090
G19     79.5           25.2               10.8 +/-    0.80      20.9 +/-    0.80  0.070 / 0.110
G24     223.9          18.7               14.7 +/-    3.18      33.3 +/-    3.18  0.120 / 0.370
G25     316.1          33.4                8.2 +/-    1.33      13.3 +/-    1.33  0.140 / 0.420
G29     290.0          11.4                9.8 +/-    3.13      26.6 +/-    3.13  0.040 / 0.040