PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-12:58:10
G01     50.4           25.5                4.8 +/-    1.05       9.3 +/-    1.05  0.070 / 0.130
G06     178.6          24.0                5.7 +/-    1.45      11.5 +/-    1.45  0.070 / 0.110
G11     44.3           13.5                3.1 +/-    2.17       8.1 +/-    2.17  0.110 / 0.330
G13     253.4          30.5                7.0 +/-    1.09      12.1 +/-    1.09  0.080 / 0.340
G15     285.6          15.7                4.2 +/-    2.65      10.3 +/-    2.65  0.090 / 0.220
G17     326.0          78.7                3.9 +/-    0.44       3.9 +/-    0.44  0.060 / 0.210
G19     247.6          61.7                5.7 +/-    0.35       6.3 +/-    0.35  0.080 / 0.180
G28     52.4           52.8                2.5 +/-    0.45       3.0 +/-    0.45  0.080 / 0.160
G30     149.5          43.3                5.1 +/-    2.12       7.0 +/-    2.12  0.060 / 0.060