PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/23-21:12:30
G08     308.9          19.4               14.1 +/-    2.57      31.4 +/-    2.57  0.060 / 0.080
G10     329.8          59.5               11.7 +/-    0.71      13.4 +/-    0.71  0.050 / 0.080
G14     218.1          31.7               17.2 +/-    1.22      29.2 +/-    1.22  0.050 / 0.080
G15     46.7           10.5               12.5 +/-    1.47      34.4 +/-    1.47  0.050 / 0.090
G18     39.3           59.1               13.5 +/-    0.55      15.4 +/-    0.55  0.090 / 0.180
G24     75.8           30.6               14.6 +/-    0.76      25.2 +/-    0.76  0.070 / 0.170
G27     273.4          37.6               15.5 +/-    0.79      23.5 +/-    0.79  0.040 / 0.060
G32     223.3          49.2               14.5 +/-    1.89      18.5 +/-    1.89  0.040 / 0.050