PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-04:27:50
G01     305.9          33.9                6.9 +/-    1.44      11.2 +/-    1.44  0.050 / 0.020
G10     106.8          40.3                7.6 +/-    0.50      11.0 +/-    0.50  0.040 / 0.030
G11     278.3          29.6                8.6 +/-    0.85      15.1 +/-    0.85  0.070 / 0.140
G14     3.4            65.6                7.7 +/-    0.83       8.4 +/-    0.83  0.110 / 0.170
G18     117.6          14.7                6.5 +/-    1.65      16.2 +/-    1.65  0.060 / 0.080
G22     309.9          26.9                7.8 +/-    2.23      14.5 +/-    2.23  0.050 / 0.090
G25     76.8           16.1                7.0 +/-    2.02      17.0 +/-    2.02  0.050 / 0.060
G31     167.5          65.6                9.7 +/-    0.57      10.6 +/-    0.57  0.050 / 0.050
G32     35.4           53.0                7.9 +/-    1.24       9.6 +/-    1.24  0.030 / 0.040