PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-19:13:00
G08     266.1          17.4               11.2 +/-    1.26      26.2 +/-    1.26  0.230 / 0.270
G10     63.0           58.3                9.7 +/-    0.92      11.2 +/-    0.92  0.140 / 0.230
G11     311.0          17.6               10.4 +/-    1.63      24.2 +/-    1.63  0.080 / 0.350
G14     270.9          67.1               10.6 +/-    0.77      11.4 +/-    0.77  0.120 / 0.420
G18     94.2           33.8                9.4 +/-    0.87      15.3 +/-    0.87  0.040 / 0.030
G24     39.6           10.0                8.5 +/-    4.01      23.6 +/-    4.01  0.030 / 0.030
G27     229.6          14.5               11.2 +/-    1.15      28.1 +/-    1.15  0.030 / 0.020
G31     179.4          30.4               11.0 +/-    1.69      19.1 +/-    1.69  0.020 / 0.020
G32     340.2          73.6               10.2 +/-    0.45      10.6 +/-    0.45  0.030 / 0.030