PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-00:28:00
G02     352.3          77.4               11.2 +/-    0.30      11.5 +/-    0.30  0.020 / 0.020
G05     162.4          35.8               17.5 +/-    0.92      27.4 +/-    0.92  0.030 / 0.030
G06     42.1           38.4                9.5 +/-    0.98      14.1 +/-    0.98  0.040 / 0.070
G12     308.7          72.9               12.2 +/-    0.71      12.7 +/-    0.71  0.060 / 0.070
G17     86.0           13.4               10.8 +/-    2.69      27.9 +/-    2.69  0.170 / 0.140
G19     75.6           27.6               10.0 +/-    1.40      18.5 +/-    1.40  0.110 / 0.140
G24     227.2          21.7               17.5 +/-    2.13      37.0 +/-    2.13  0.050 / 0.050
G25     317.1          29.4               10.9 +/-    1.45      19.3 +/-    1.45  0.040 / 0.050