PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-23:12:30
G07     2.5            66.1                8.1 +/-    0.77       8.8 +/-    0.77  0.040 / 0.110
G08     73.2           52.0                7.6 +/-    0.39       9.3 +/-    0.39  0.040 / 0.090
G09     182.3          56.4                8.2 +/-    1.98       9.6 +/-    1.98  0.040 / 0.050
G11     136.8          23.1                9.3 +/-    1.07      19.0 +/-    1.07  0.040 / 0.050
G23     159.0          23.5                8.1 +/-    0.70      16.4 +/-    0.70  0.070 / 0.130
G27     42.5           20.3                6.0 +/-    0.64      13.2 +/-    0.64  0.110 / 0.150
G28     253.4          42.6                9.5 +/-    0.53      13.2 +/-    0.53  0.050 / 0.040
G30     319.7          50.5                8.1 +/-    0.88      10.1 +/-    0.88  0.040 / 0.040