PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-23:28:00
G02     345.9          78.4                9.6 +/-    0.87       9.8 +/-    0.87  0.030 / 0.040
G05     163.2          34.4               16.9 +/-    1.22      27.0 +/-    1.22  0.020 / 0.040
G06     41.9           39.2                8.5 +/-    0.52      12.5 +/-    0.52  0.130 / 0.240
G12     310.6          72.3                9.5 +/-    0.72      10.0 +/-    0.72  0.130 / 0.190
G17     85.3           13.5               11.3 +/-    1.42      29.2 +/-    1.42  0.040 / 0.090
G19     74.3           28.6               10.6 +/-    0.67      19.2 +/-    0.67  0.040 / 0.090
G24     227.9          22.5               16.8 +/-    1.98      34.8 +/-    1.98  0.030 / 0.040
G25     317.3          28.4                7.5 +/-    1.47      13.5 +/-    1.47  0.030 / 0.040