PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/06-18:27:30
G02     224.6          65.1               16.0 +/-    1.16      17.4 +/-    1.16  0.040 / 0.040
G06     44.9           66.1               13.7 +/-    0.44      14.8 +/-    0.44  0.040 / 0.060
G12     321.2          45.3               12.4 +/-    0.76      16.6 +/-    0.76  0.050 / 0.070
G17     66.4           24.6               12.3 +/-    1.08      24.3 +/-    1.08  0.050 / 0.090
G19     51.3           41.8               11.4 +/-    0.98      16.1 +/-    0.98  0.040 / 0.060
G24     256.5          38.9               15.7 +/-    2.73      23.2 +/-    2.73  0.030 / 0.060