PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/13-02:57:40
G02     21.1           65.4                7.5 +/-    0.34       8.1 +/-    0.34  0.020 / 0.030
G05     153.2          50.0                8.8 +/-    0.68      11.1 +/-    0.68  0.030 / 0.020
G06     47.0           26.9                5.3 +/-    1.52       9.9 +/-    1.52  0.030 / 0.040
G12     246.8          79.3                7.7 +/-    0.38       7.9 +/-    0.38  0.030 / 0.040
G19     88.5           18.7                6.8 +/-    1.39      15.5 +/-    1.39  0.100 / 0.310
G24     217.6          12.1                9.8 +/-    2.66      26.2 +/-    2.66  0.130 / 0.170
G25     311.7          41.9                7.9 +/-    0.86      11.2 +/-    0.86  0.110 / 0.150
G29     297.5          18.2                8.9 +/-    1.90      20.5 +/-    1.90  0.130 / 0.110