PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/16-01:27:40
G07     323.0          54.5                3.5 +/-    0.45       4.1 +/-    0.45  0.040 / 0.030
G08     109.7          48.0                5.6 +/-    0.55       7.2 +/-    0.55  0.050 / 0.040
G09     206.3          81.5                4.2 +/-    0.64       4.2 +/-    0.64  0.300 / 0.390
G16     44.0           15.5                1.5 +/-    3.75       3.8 +/-    3.75  0.330 / 0.500
G23     152.6          54.1                5.5 +/-    0.48       6.6 +/-    0.48  0.110 / 0.270
G27     67.9           37.1                3.8 +/-    0.42       5.8 +/-    0.42  0.320 / 0.350
G28     230.0          19.8               -1.5 +/-    2.22      -3.4 +/-    2.22  0.030 / 0.050
G30     293.8          27.8                2.5 +/-    2.30       4.5 +/-    2.30  0.050 / 0.050