PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/05-13:12:30
G02     203.7          36.0                9.1 +/-    1.88      14.2 +/-    1.88  0.060 / 0.170
G06     161.4          69.9                6.9 +/-    1.73       7.3 +/-    1.73  0.070 / 0.180
G12     308.6          16.1                4.2 +/-    2.18      10.3 +/-    2.18  0.120 / 0.330
G17     40.0           45.9                4.2 +/-    0.52       5.6 +/-    0.52  0.140 / 0.240
G19     9.6            63.1                5.1 +/-    1.76       5.6 +/-    1.76  0.070 / 0.110
G24     297.7          37.9                6.4 +/-    0.86       9.7 +/-    0.86  0.070 / 0.090
G28     104.8          29.4                7.3 +/-    1.61      13.0 +/-    1.61  0.040 / 0.040