PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-23:12:50
G10     247.0          22.6               14.4 +/-    1.84      29.8 +/-    1.84  0.130 / 0.270
G13     59.1           33.6               14.8 +/-    1.74      24.1 +/-    1.74  0.250 / 0.220
G15     98.3           58.1               14.5 +/-    0.85      16.7 +/-    0.85  0.110 / 0.380
G16     302.2          14.3                9.1 +/-    3.20      23.1 +/-    3.20  0.110 / 0.330
G18     262.3          52.5               12.0 +/-    1.73      14.6 +/-    1.73  0.030 / 0.050
G20     40.4           51.4               11.9 +/-    0.54      14.8 +/-    0.54  0.030 / 0.040
G21     328.6          57.5               12.4 +/-    0.44      14.4 +/-    0.44  0.030 / 0.040
G26     274.5          16.9               13.3 +/-    3.72      31.5 +/-    3.72  0.030 / 0.040
G29     162.3          51.9               14.5 +/-    0.59      17.9 +/-    0.59  0.060 / 0.050