PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-20:57:50
G02     67.4           27.3               10.4 +/-    0.76      19.3 +/-    0.76  0.100 / 0.120
G05     49.8           56.6               12.5 +/-    0.67      14.7 +/-    0.67  0.050 / 0.110
G12     182.7          21.2               20.6 +/-    1.13      44.0 +/-    1.13  0.050 / 0.090
G13     121.2          22.4               18.7 +/-    0.82      38.8 +/-    0.82  0.050 / 0.080
G15     158.9          20.0               23.9 +/-    2.12      52.6 +/-    2.12  0.030 / 0.040
G20     215.4          73.1               15.0 +/-    0.51      15.6 +/-    0.51  0.030 / 0.040
G21     279.9          24.3               15.3 +/-    2.17      30.4 +/-    2.17  0.030 / 0.040
G25     218.3          41.6               17.8 +/-    2.23      25.2 +/-    2.23  0.030 / 0.080
G29     339.0          68.0               11.5 +/-    1.02      12.3 +/-    1.02  0.070 / 0.180