PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/23-06:28:10
G07     336.7          59.1                4.6 +/-    1.31       5.2 +/-    1.31  0.110 / 0.470
G08     95.0           51.5                7.0 +/-    0.83       8.7 +/-    0.83  0.120 / 0.440
G09     187.6          72.1                7.7 +/-    0.70       8.0 +/-    0.70  0.040 / 0.040
G11     144.2          13.4                4.5 +/-    2.61      11.6 +/-    2.61  0.030 / 0.040
G16     46.6           11.1                3.3 +/-    2.53       9.0 +/-    2.53  0.080 / 0.200
G23     156.3          42.5                8.0 +/-    0.82      11.2 +/-    0.82  0.080 / 0.160
G27     53.4           30.3                3.7 +/-    0.48       6.4 +/-    0.48  0.040 / 0.040
G28     238.4          30.9                5.1 +/-    1.27       8.8 +/-    1.27  0.030 / 0.050
G30     302.5          35.3                5.2 +/-    0.80       8.2 +/-    0.80  0.040 / 0.030