PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-23:12:30
G02     282.3          81.3               10.2 +/-    0.79      10.3 +/-    0.79  0.020 / 0.030
G05     167.6          24.4               15.0 +/-    0.95      29.7 +/-    0.95  0.030 / 0.030
G06     40.1           49.2               10.3 +/-    0.73      13.2 +/-    0.73  0.120 / 0.210
G12     320.3          61.5               10.2 +/-    0.69      11.5 +/-    0.69  0.100 / 0.230
G17     76.6           19.7               10.4 +/-    1.19      22.9 +/-    1.19  0.060 / 0.130
G19     64.3           34.9               10.9 +/-    2.09      17.3 +/-    2.09  0.100 / 0.110
G24     236.6          29.6               14.0 +/-    1.75      24.8 +/-    1.75  0.100 / 0.160
G25     317.7          19.0                8.6 +/-    2.14      19.4 +/-    2.14  0.140 / 0.190