PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-19:28:10
G02     19.3           65.6               11.4 +/-    0.54      12.4 +/-    0.54  0.020 / 0.040
G05     158.6          50.3               14.6 +/-    0.74      18.4 +/-    0.74  0.030 / 0.040
G06     49.1           23.5               10.5 +/-    0.82      21.2 +/-    0.82  0.040 / 0.050
G12     220.1          76.9               11.4 +/-    0.64      11.7 +/-    0.64  0.050 / 0.070
G19     93.2           14.0               12.7 +/-    1.13      32.3 +/-    1.13  0.200 / 0.370
G20     197.2          17.8               15.4 +/-    1.57      35.7 +/-    1.57  0.230 / 0.360
G24     216.0          10.0               14.2 +/-    1.90      39.7 +/-    1.90  0.030 / 0.050
G25     305.5          50.6               12.3 +/-    1.02      15.4 +/-    1.02  0.040 / 0.050
G29     301.5          23.0               12.1 +/-    1.35      24.8 +/-    1.35  0.060 / 0.150