PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/09-14:58:10
G02     329.5          80.4                7.6 +/-    0.36       7.7 +/-    0.36  0.030 / 0.040
G05     168.4          28.7               11.3 +/-    1.26      20.4 +/-    1.26  0.030 / 0.040
G06     40.6           44.6                5.5 +/-    0.53       7.4 +/-    0.53  0.030 / 0.040
G12     314.9          67.7                7.2 +/-    1.47       7.8 +/-    1.47  0.030 / 0.030
G17     85.4           10.8                8.1 +/-    2.23      22.3 +/-    2.23  0.070 / 0.150
G19     74.0           27.3                7.1 +/-    0.49      13.2 +/-    0.49  0.070 / 0.160
G24     232.1          25.0                9.5 +/-    1.65      18.6 +/-    1.65  0.110 / 0.370
G25     317.5          28.7                6.5 +/-    1.40      11.7 +/-    1.40  0.060 / 0.360
G29     286.2          11.1                1.4 +/-   26.27       3.7 +/-   26.27  0.040 / 0.110