PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-01:28:00
G10     259.8          32.8               10.4 +/-    2.33      17.2 +/-    2.33  0.100 / 0.450
G13     46.3           24.7                8.4 +/-    2.35      16.5 +/-    2.35  0.100 / 0.450
G15     71.2           55.4               11.1 +/-    0.81      13.2 +/-    0.81  0.170 / 0.300
G16     287.0          13.4                8.6 +/-    1.35      22.3 +/-    1.35  0.180 / 0.310
G18     284.4          60.4                9.4 +/-    1.47      10.7 +/-    1.47  0.110 / 0.110
G20     50.6           38.7                8.9 +/-    1.78      13.3 +/-    1.78  0.060 / 0.100
G21     347.9          67.3                7.7 +/-    0.80       8.3 +/-    0.80  0.030 / 0.030
G26     260.0          11.1               10.8 +/-    4.18      29.4 +/-    4.18  0.040 / 0.040
G27     320.5          14.9                6.7 +/-    1.33      16.6 +/-    1.33  0.050 / 0.060
G29     166.5          36.6               12.9 +/-    0.58      19.8 +/-    0.58  0.040 / 0.060