PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-00:57:50
G10     259.7          33.6               11.5 +/-    1.60      18.7 +/-    1.60  0.130 / 0.260
G13     45.8           23.5                9.2 +/-    2.15      18.6 +/-    2.15  0.130 / 0.210
G15     71.0           55.4               10.4 +/-    0.81      12.4 +/-    0.81  0.040 / 0.040
G16     284.4          14.4               10.0 +/-    1.51      25.2 +/-    1.51  0.050 / 0.050
G20     270.9          42.7               14.9 +/-    2.30      20.7 +/-    2.30  0.080 / 0.310
G21     346.3          66.6               11.7 +/-    0.45      12.6 +/-    0.45  0.110 / 0.250
G24     125.0          10.2               -3.3 +/-   38.18      -9.3 +/-   38.18  0.200 / 0.410
G26     257.3          11.2               12.9 +/-    6.98      35.2 +/-    6.98  0.230 / 0.330
G27     321.3          13.1                7.6 +/-    4.86      19.8 +/-    4.86  0.090 / 0.240
G29     167.4          39.9               13.0 +/-    1.18      18.9 +/-    1.18  0.110 / 0.260