PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-21:28:00
G08     305.5          21.1               15.1 +/-    1.63      32.3 +/-    1.63  0.040 / 0.050
G10     338.9          61.0               15.9 +/-    0.74      17.9 +/-    0.74  0.030 / 0.040
G14     219.7          33.4               25.8 +/-    1.32      42.3 +/-    1.32  0.050 / 0.100
G15     47.5           11.7               12.9 +/-    2.01      34.7 +/-    2.01  0.080 / 0.110
G20     43.4           59.1               17.2 +/-    0.77      19.7 +/-    0.77  0.110 / 0.150
G21     137.3          53.5               19.9 +/-    0.34      24.0 +/-    0.34  0.170 / 0.150
G24     67.4           28.2               15.1 +/-    0.87      27.5 +/-    0.87  0.130 / 0.300
G32     226.1          56.2               22.0 +/-    2.78      25.8 +/-    2.78  0.140 / 0.220