PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-22:57:50
G02     220.8          65.9               16.9 +/-    0.48      18.4 +/-    0.48  0.070 / 0.070
G06     48.2           69.1               13.5 +/-    0.59      14.3 +/-    0.59  0.040 / 0.060
G12     320.2          41.3               12.4 +/-    0.83      17.7 +/-    0.83  0.040 / 0.040
G17     59.8           31.9               12.2 +/-    0.55      20.6 +/-    0.55  0.040 / 0.050
G19     43.6           47.1               12.5 +/-    0.72      16.3 +/-    0.72  0.040 / 0.060
G24     258.5          40.2               16.1 +/-    0.68      23.3 +/-    0.68  0.040 / 0.070