PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/26-09:27:50
G01     71.0           32.8                4.1 +/-    1.17       6.8 +/-    1.17  0.030 / 0.050
G07     137.2          29.8                7.8 +/-    0.96      13.7 +/-    0.96  0.040 / 0.050
G11     53.7           29.8                2.7 +/-    0.53       4.8 +/-    0.53  0.030 / 0.040
G13     276.9          36.9                6.7 +/-    0.95      10.3 +/-    0.95  0.050 / 0.040
G15     303.1          15.3                1.4 +/-    2.59       3.5 +/-    2.59  0.120 / 0.360
G17     234.4          71.0                7.5 +/-    0.60       7.9 +/-    0.60  0.100 / 0.380
G19     224.2          43.5                7.5 +/-    0.83      10.4 +/-    0.83  0.060 / 0.100
G28     20.3           59.1                4.8 +/-    0.28       5.5 +/-    0.28  0.050 / 0.090
G30     134.5          62.3                8.1 +/-    0.74       9.0 +/-    0.74  0.050 / 0.080