PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-21:43:10
G02     67.4           27.5                9.4 +/-    0.85      17.3 +/-    0.85  0.050 / 0.090
G05     49.2           55.4               10.3 +/-    0.23      12.3 +/-    0.23  0.050 / 0.080
G12     182.4          20.4               12.4 +/-    2.03      27.0 +/-    2.03  0.070 / 0.130
G13     120.6          22.7               12.9 +/-    0.88      26.5 +/-    0.88  0.090 / 0.130
G15     159.1          20.1               13.4 +/-    3.50      29.3 +/-    3.50  0.030 / 0.050
G20     215.7          73.9               12.2 +/-    1.06      12.6 +/-    1.06  0.030 / 0.050
G25     217.3          40.9               11.5 +/-    1.37      16.5 +/-    1.37  0.030 / 0.040
G29     338.7          68.0               10.2 +/-    0.75      10.9 +/-    0.75  0.030 / 0.040