PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-04:13:10
G07     310.8          48.5                4.3 +/-    0.84       5.6 +/-    0.84  0.450 / 0.700
G08     123.4          42.8                8.3 +/-    0.38      11.5 +/-    0.38  0.490 / 0.660
G09     292.1          81.1                6.1 +/-    0.65       6.2 +/-    0.65  0.050 / 0.040
G16     41.9           27.5                3.5 +/-    0.93       6.5 +/-    0.93  0.030 / 0.040
G23     146.6          62.4                6.3 +/-    0.61       7.0 +/-    0.61  0.070 / 0.160
G27     74.4           36.6                7.9 +/-    0.87      12.1 +/-    0.87  0.080 / 0.170
G28     225.6          15.5                5.4 +/-   11.28      13.3 +/-   11.28  0.040 / 0.050
G30     287.9          24.0                3.1 +/-    1.81       6.1 +/-    1.81  0.050 / 0.060