PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-00:12:30
G02     353.8          77.0               12.7 +/-    0.41      13.0 +/-    0.41  0.030 / 0.030
G05     162.2          36.4               17.9 +/-    0.86      27.8 +/-    0.86  0.030 / 0.030
G06     42.3           37.7               11.5 +/-    0.94      17.4 +/-    0.94  0.040 / 0.090
G12     307.3          73.7               13.2 +/-    0.50      13.7 +/-    0.50  0.050 / 0.060
G17     86.6           12.9               13.1 +/-    2.92      34.3 +/-    2.92  0.180 / 0.150
G19     76.1           27.3               12.3 +/-    1.27      22.7 +/-    1.27  0.140 / 0.190
G24     226.6          21.3               16.5 +/-    0.94      35.2 +/-    0.94  0.050 / 0.060
G25     317.0          30.0               11.6 +/-    1.23      20.4 +/-    1.23  0.050 / 0.060