PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-17:13:10
G02     227.0          67.8               12.8 +/-    0.85      13.7 +/-    0.85  0.170 / 0.620
G06     43.7           65.0               12.1 +/-    0.27      13.2 +/-    0.27  0.230 / 0.510
G12     321.3          46.2               11.0 +/-    1.18      14.6 +/-    1.18  0.060 / 0.090
G17     67.7           23.6               11.8 +/-    0.80      23.8 +/-    0.80  0.050 / 0.090
G19     53.0           40.8               13.3 +/-    0.91      19.1 +/-    0.91  0.040 / 0.070
G24     254.4          38.2               13.7 +/-    0.67      20.5 +/-    0.67  0.050 / 0.070
G25     315.7          10.9              -11.4 +/-   35.49     -31.1 +/-   35.49  0.060 / 0.140