PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-18:28:00
G02     268.5          79.2               11.3 +/-    0.64      11.5 +/-    0.64  0.030 / 0.030
G05     171.9          21.1               12.7 +/-    1.48      27.2 +/-    1.48  0.030 / 0.030
G06     40.2           49.6               10.3 +/-    0.57      13.0 +/-    0.57  0.120 / 0.130
G12     320.1          61.9               11.6 +/-    0.80      13.0 +/-    0.80  0.120 / 0.120
G17     79.8           14.7               10.6 +/-    2.88      26.6 +/-    2.88  0.020 / 0.040
G19     67.6           31.4               10.9 +/-    2.88      18.5 +/-    2.88  0.050 / 0.040
G24     238.4          29.9               12.7 +/-    1.59      22.3 +/-    1.59  0.110 / 0.210
G25     317.7          24.4               12.8 +/-    1.12      25.3 +/-    1.12  0.120 / 0.160