PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-22:58:10
G02     242.6          76.4               10.1 +/-    0.38      10.4 +/-    0.38  0.050 / 0.030
G05     170.8          17.0               18.8 +/-    2.57      44.5 +/-    2.57  0.050 / 0.040
G06     40.7           57.4               10.0 +/-    0.49      11.7 +/-    0.49  0.090 / 0.100
G12     321.8          53.0                9.7 +/-    0.78      11.8 +/-    0.78  0.160 / 0.090
G17     69.8           24.6               11.0 +/-    1.87      21.7 +/-    1.87  0.160 / 0.270
G19     56.1           39.9                9.8 +/-    0.85      14.2 +/-    0.85  0.140 / 0.250
G24     244.7          34.7               13.7 +/-    2.00      21.9 +/-    2.00  0.050 / 0.030
G25     316.7          11.8               -5.2 +/-   31.87     -13.9 +/-   31.87  0.060 / 0.030