PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-19:58:10
G01     75.2           33.3               12.9 +/-    1.34      21.2 +/-    1.34  0.090 / 0.270
G07     135.2          34.8               16.4 +/-    1.57      26.1 +/-    1.57  0.080 / 0.290
G11     57.2           34.0               12.9 +/-    1.87      20.9 +/-    1.87  0.080 / 0.090
G13     279.4          37.7               15.2 +/-    2.10      22.9 +/-    2.10  0.090 / 0.110
G15     306.0          14.3                9.7 +/-    3.26      24.6 +/-    3.26  0.050 / 0.080
G17     227.0          61.9               16.5 +/-    1.27      18.5 +/-    1.27  0.060 / 0.080
G18     52.4           20.2               12.7 +/-    6.85      27.9 +/-    6.85  0.390 / 0.340
G19     221.6          37.3               18.0 +/-    2.00      27.4 +/-    2.00  0.160 / 0.310
G28     13.5           60.0               14.9 +/-    1.20      17.0 +/-    1.20  0.040 / 0.050
G30     131.2          64.2               16.8 +/-    0.35      18.5 +/-    0.35  0.040 / 0.050