PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-23:42:40
G02     350.8          77.5                8.4 +/-    0.38       8.5 +/-    0.38  0.020 / 0.030
G05     162.5          35.7               13.6 +/-    0.99      21.4 +/-    0.99  0.030 / 0.030
G06     42.2           38.2                8.1 +/-    0.97      12.2 +/-    0.97  0.140 / 0.150
G12     308.3          73.4                8.2 +/-    0.53       8.5 +/-    0.53  0.120 / 0.110
G17     86.2           12.9               10.0 +/-    2.75      26.2 +/-    2.75  0.040 / 0.080
G19     75.5           27.8               10.0 +/-    1.00      18.3 +/-    1.00  0.060 / 0.060
G24     227.0          21.7               14.6 +/-    1.68      30.9 +/-    1.68  0.050 / 0.040
G25     317.1          29.5                8.2 +/-    1.62      14.5 +/-    1.62  0.040 / 0.060