PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/17-21:28:00
G01     320.2          15.9                7.9 +/-    2.51      19.2 +/-    2.51  0.200 / 0.240
G08     263.2          15.8               11.9 +/-   10.39      29.0 +/-   10.39  0.370 / 0.390
G10     73.4           53.9               10.6 +/-    0.53      12.8 +/-    0.53  0.040 / 0.050
G11     309.1          18.6                8.2 +/-    2.55      18.8 +/-    2.55  0.040 / 0.070
G14     274.1          66.6               12.5 +/-    0.89      13.5 +/-    0.89  0.310 / 0.760
G20     102.1          30.7               11.0 +/-    1.48      19.0 +/-    1.48  0.190 / 0.600
G21     156.1          10.3               13.9 +/-   11.35      38.5 +/-   11.35  0.180 / 0.200
G27     227.4          12.4               12.3 +/-    4.67      32.5 +/-    4.67  0.250 / 0.300
G31     176.1          37.2               13.3 +/-    1.29      20.3 +/-    1.29  0.280 / 0.520
G32     359.7          70.5               10.4 +/-    0.40      11.0 +/-    0.40  0.190 / 0.490