PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-23:27:40
G08     319.6          11.5                5.7 +/-   18.88      15.3 +/-   18.88  0.040 / 0.040
G10     318.8          58.0                9.4 +/-    0.79      10.9 +/-    0.79  0.040 / 0.040
G14     213.8          21.2               12.9 +/-    2.34      27.6 +/-    2.34  0.140 / 0.180
G15     45.8           17.9                7.7 +/-    2.91      17.8 +/-    2.91  0.140 / 0.240
G20     20.6           63.1                9.2 +/-    1.09      10.2 +/-    1.09  0.340 / 0.470
G21     123.0          66.0               11.5 +/-    0.57      12.4 +/-    0.57  0.220 / 0.410
G24     85.3           30.0               10.2 +/-    0.76      17.8 +/-    0.76  0.120 / 0.380
G27     286.9          37.7                9.4 +/-    1.79      14.2 +/-    1.79  0.110 / 0.350
G32     216.2          43.4               11.8 +/-    0.91      16.3 +/-    0.91  0.100 / 0.070