PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-11:13:00
G01     67.2           32.3                5.6 +/-    1.11       9.4 +/-    1.11  0.040 / 0.060
G07     138.9          26.4                7.5 +/-    1.29      14.1 +/-    1.29  0.050 / 0.060
G11     51.3           27.0                3.5 +/-    1.98       6.5 +/-    1.98  0.110 / 0.380
G13     273.1          36.5                8.5 +/-    1.38      13.2 +/-    1.38  0.100 / 0.330
G15     300.8          15.6                2.8 +/-    2.19       7.0 +/-    2.19  0.040 / 0.110
G17     242.2          74.1                7.5 +/-    0.55       7.8 +/-    0.55  0.050 / 0.110
G19     226.8          46.7                8.4 +/-    0.77      11.1 +/-    0.77  0.030 / 0.040
G28     25.6           58.3                5.2 +/-    0.40       6.0 +/-    0.40  0.040 / 0.040
G30     137.8          59.9                7.8 +/-    0.87       8.9 +/-    0.87  0.060 / 0.080