PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/11-09:43:10
G01     96.0           30.1                4.0 +/-    2.68       7.0 +/-    2.68  0.070 / 0.250
G07     120.6          48.2                3.9 +/-    3.26       5.0 +/-    3.26  0.070 / 0.120
G08     41.9           10.4                4.1 +/-   25.50      11.3 +/-   25.50  0.030 / 0.050
G11     74.1           40.1                3.4 +/-    3.07       4.9 +/-    3.07  0.020 / 0.040
G13     302.0          32.7                5.6 +/-   27.28       9.3 +/-   27.28  0.040 / 0.190
G17     210.6          50.7               11.1 +/-   27.77      13.9 +/-   27.77  0.040 / 0.090
G19     212.2          23.9                7.2 +/-   25.62      14.5 +/-   25.62  0.050 / 0.220
G28     339.9          61.8                6.0 +/-   25.51       6.8 +/-   25.51  0.040 / 0.070
G30     76.6           79.2                3.5 +/-    3.23       3.5 +/-    3.23  0.140 / 0.280