PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-00:27:40
G08     304.0          21.5                9.8 +/-    2.38      20.7 +/-    2.38  0.030 / 0.020
G10     339.2          61.0                7.1 +/-    0.36       8.0 +/-    0.36  0.030 / 0.030
G14     220.9          36.9                9.4 +/-    1.09      14.4 +/-    1.09  0.050 / 0.080
G18     45.4           57.6                9.2 +/-    0.86      10.7 +/-    0.86  0.060 / 0.070
G21     138.0          51.4               11.0 +/-    0.58      13.6 +/-    0.58  0.070 / 0.070
G24     70.2           30.2               11.4 +/-    1.36      19.9 +/-    1.36  0.060 / 0.100
G27     266.8          36.5                9.7 +/-    1.30      15.0 +/-    1.30  0.030 / 0.040
G32     227.9          54.2                9.0 +/-    2.63      10.8 +/-    2.63  0.030 / 0.050