PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-14:57:30
G02     201.8          24.8               15.9 +/-    2.98      31.2 +/-    2.98  0.100 / 0.110
G06     168.6          60.1               12.6 +/-    0.53      14.3 +/-    0.53  0.090 / 0.110
G17     31.4           53.1               10.9 +/-    0.64      13.3 +/-    0.64  0.220 / 0.490
G19     348.1          68.8               11.3 +/-    0.62      12.0 +/-    0.62  0.350 / 0.390
G24     307.1          32.3                8.4 +/-    2.05      14.1 +/-    2.05  0.050 / 0.060
G28     95.0           35.8               10.4 +/-    1.26      16.3 +/-    1.26  0.030 / 0.050
G30     158.1          10.6               13.6 +/-    1.49      37.5 +/-    1.49  0.150 / 0.220