PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/01-01:58:00
G10     287.6          47.7                9.8 +/-    0.74      12.7 +/-    0.74  0.050 / 0.040
G15     48.2           36.3                7.0 +/-    1.67      10.8 +/-    1.67  0.050 / 0.050
G18     339.2          66.7                9.5 +/-    1.06      10.3 +/-    1.06  0.070 / 0.160
G20     67.5           20.9                8.6 +/-    3.43      18.6 +/-    3.43  0.080 / 0.210
G21     71.1           76.9               11.7 +/-    0.55      12.0 +/-    0.55  0.030 / 0.050
G24     105.6          23.6               10.0 +/-    1.14      20.1 +/-    1.14  0.040 / 0.060
G27     305.3          32.2                9.6 +/-    1.04      16.1 +/-    1.04  0.110 / 0.240
G29     167.7          11.7               13.0 +/-    2.16      35.0 +/-    2.16  0.140 / 0.220
G32     208.7          25.0               14.1 +/-    2.18      27.6 +/-    2.18  0.050 / 0.090