PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-17:58:10
G02     23.5           63.2                9.0 +/-    0.59      10.0 +/-    0.59  0.020 / 0.030
G05     157.9          51.9                9.9 +/-    0.70      12.2 +/-    0.70  0.030 / 0.040
G06     49.7           22.6                6.3 +/-    0.80      13.0 +/-    0.80  0.050 / 0.070
G12     216.7          75.6                6.8 +/-    0.75       7.0 +/-    0.75  0.040 / 0.080
G19     94.7           12.9                9.2 +/-    1.38      24.0 +/-    1.38  0.060 / 0.150
G20     197.5          19.1               14.4 +/-    1.85      32.5 +/-    1.85  0.070 / 0.150
G25     304.2          51.0               11.1 +/-    0.58      13.8 +/-    0.58  0.040 / 0.060
G29     303.3          25.2               10.8 +/-    1.02      21.0 +/-    1.02  0.030 / 0.050