PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-21:57:30
G02     201.3          28.5               23.8 +/-    2.09      43.0 +/-    2.09  0.150 / 0.220
G06     165.6          62.4               16.8 +/-    0.42      18.6 +/-    0.42  0.090 / 0.140
G12     303.9          10.7               -6.1 +/-    8.86     -16.8 +/-    8.86  0.100 / 0.120
G17     25.3           57.0               13.3 +/-    0.79      15.5 +/-    0.79  0.030 / 0.040
G19     340.7          69.0               12.8 +/-    0.72      13.6 +/-    0.72  0.040 / 0.030
G24     304.5          34.5               12.8 +/-    2.33      20.6 +/-    2.33  0.060 / 0.110
G28     96.0           35.2               14.5 +/-    1.01      22.9 +/-    1.01  0.040 / 0.090