PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/13-20:27:50
G08     318.1          13.7               15.1 +/-    3.60      38.7 +/-    3.60  0.090 / 0.070
G10     309.6          55.5               15.6 +/-    1.43      18.5 +/-    1.43  0.070 / 0.090
G14     212.4          18.5               18.8 +/-    1.65      43.0 +/-    1.65  0.040 / 0.030
G15     45.8           25.0               15.6 +/-    2.43      30.4 +/-    2.43  0.030 / 0.040
G20     10.7           64.4               15.8 +/-    0.79      17.3 +/-    0.79  0.390 / 0.420
G21     116.5          67.9               18.2 +/-    1.00      19.5 +/-    1.00  0.300 / 0.500
G24     85.5           28.1               15.9 +/-    1.58      29.0 +/-    1.58  0.090 / 0.420
G27     293.1          36.0               17.4 +/-    1.83      27.1 +/-    1.83  0.130 / 0.320
G32     214.0          40.2               18.6 +/-    2.14      27.0 +/-    2.14  0.240 / 0.120