PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-18:43:10
G10     300.6          52.5               10.4 +/-    1.48      12.8 +/-    1.48  0.060 / 0.070
G14     211.0          15.0               13.9 +/-    3.93      34.6 +/-    3.93  0.060 / 0.070
G15     45.6           24.8               11.0 +/-    2.04      21.6 +/-    2.04  0.030 / 0.040
G18     7.8            65.1               10.8 +/-    0.58      11.8 +/-    0.58  0.040 / 0.030
G20     72.8           17.7               10.9 +/-    1.61      25.3 +/-    1.61  0.100 / 0.290
G21     109.5          68.2               13.3 +/-    1.23      14.2 +/-    1.23  0.110 / 0.170
G24     96.0           27.6               11.5 +/-    1.44      21.2 +/-    1.44  0.060 / 0.110
G27     295.8          36.1               12.4 +/-    2.26      19.3 +/-    2.26  0.090 / 0.120
G32     212.4          33.1               13.8 +/-    2.39      22.6 +/-    2.39  0.160 / 0.170