PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-20:12:40
G10     261.4          36.2               14.6 +/-    1.52      22.7 +/-    1.52  0.090 / 0.210
G13     44.4           21.3               11.1 +/-    1.90      23.7 +/-    1.90  0.090 / 0.190
G15     66.6           53.2               13.8 +/-    0.58      16.8 +/-    0.58  0.050 / 0.050
G16     284.0          14.2               12.5 +/-    1.95      31.7 +/-    1.95  0.050 / 0.040
G20     289.0          58.2               14.1 +/-    0.84      16.2 +/-    0.84  0.070 / 0.320
G21     349.8          67.4               13.7 +/-    0.65      14.7 +/-    0.65  0.070 / 0.270
G24     126.5          10.7                1.6 +/-   50.38       4.3 +/-   50.38  0.110 / 0.350
G26     257.8          10.5               15.5 +/-    2.27      42.7 +/-    2.27  0.160 / 0.420
G27     321.0          14.0               11.7 +/-    2.92      29.8 +/-    2.92  0.030 / 0.050
G29     166.4          37.9               16.3 +/-    1.19      24.6 +/-    1.19  0.030 / 0.050