PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/21-03:42:40
G01     316.9          22.0                7.4 +/-    2.82      15.5 +/-    2.82  0.120 / 0.290
G10     86.1           51.4                6.5 +/-    1.22       8.1 +/-    1.22  0.080 / 0.260
G11     296.8          26.8                4.7 +/-    2.27       8.7 +/-    2.27  0.200 / 0.210
G14     318.3          71.5                5.3 +/-    0.72       5.6 +/-    0.72  0.120 / 0.150
G18     105.3          26.7                5.1 +/-    0.86       9.6 +/-    0.86  0.040 / 0.020
G22     302.8          14.1                5.2 +/-    2.38      13.3 +/-    2.38  0.040 / 0.020
G25     92.9           10.5                6.7 +/-    2.80      18.5 +/-    2.80  0.040 / 0.040
G31     175.7          46.7                6.8 +/-    0.56       9.0 +/-    0.56  0.050 / 0.040
G32     12.5           65.0                4.7 +/-    0.40       5.1 +/-    0.40  0.170 / 0.290