PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-22:27:40
G10     245.7          22.6               11.3 +/-    3.76      23.3 +/-    3.76  0.040 / 0.050
G13     59.2           32.7                6.1 +/-    6.12      10.1 +/-    6.12  0.040 / 0.060
G15     105.3          58.7                5.4 +/-    6.02       6.3 +/-    6.02  0.120 / 0.490
G16     299.9          16.1                6.5 +/-    8.69      15.8 +/-    8.69  0.170 / 0.610
G20     250.3          17.2               10.5 +/-    5.33      24.8 +/-    5.33  0.050 / 0.140
G21     325.6          55.3                4.2 +/-    5.98       5.0 +/-    5.98  0.050 / 0.130
G26     271.9          17.9                9.6 +/-    6.45      22.3 +/-    6.45  0.020 / 0.040
G29     163.4          58.0                6.0 +/-    6.33       6.9 +/-    6.33  0.020 / 0.040