PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-08:42:50
G01     70.8           32.9                4.4 +/-    0.80       7.2 +/-    0.80  0.040 / 0.040
G07     137.3          29.8                7.1 +/-    1.22      12.5 +/-    1.22  0.030 / 0.030
G11     52.7           29.6                3.7 +/-    1.20       6.5 +/-    1.20  0.050 / 0.120
G13     274.1          37.9                7.9 +/-    1.54      11.9 +/-    1.54  0.060 / 0.110
G15     305.7          13.4                2.7 +/-    2.27       7.0 +/-    2.27  0.080 / 0.100
G17     234.2          71.5                7.6 +/-    0.80       7.9 +/-    0.80  0.050 / 0.110
G18     47.5           16.8                2.7 +/-    1.49       6.5 +/-    1.49  0.120 / 0.220
G19     223.8          38.3                7.8 +/-    1.10      11.7 +/-    1.10  0.130 / 0.270
G28     16.8           59.8                4.6 +/-    0.80       5.2 +/-    0.80  0.050 / 0.080
G30     135.6          63.8                6.7 +/-    0.89       7.4 +/-    0.89  0.050 / 0.060