PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-03:28:20
G07     11.5           67.4                5.0 +/-    0.58       5.4 +/-    0.58  0.040 / 0.100
G08     66.0           49.0                6.1 +/-    0.41       7.8 +/-    0.41  0.060 / 0.100
G09     180.8          52.6                7.6 +/-    2.66       9.3 +/-    2.66  0.030 / 0.040
G11     132.4          25.3                7.1 +/-    1.00      13.7 +/-    1.00  0.030 / 0.030
G23     160.1          22.3                7.3 +/-    2.58      15.2 +/-    2.58  0.030 / 0.050
G27     41.0           17.9                4.2 +/-    1.07       9.6 +/-    1.07  0.050 / 0.040
G28     257.0          44.7                5.6 +/-    1.65       7.5 +/-    1.65  0.060 / 0.110
G30     319.9          50.3                5.7 +/-    0.77       7.2 +/-    0.77  0.080 / 0.110