PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-22:58:00
G07     330.3          56.8                7.5 +/-    0.82       8.8 +/-    0.82  0.030 / 0.060
G08     104.7          51.7               10.9 +/-    0.55      13.5 +/-    0.55  0.030 / 0.050
G09     198.4          76.1                7.6 +/-    1.10       7.8 +/-    1.10  0.070 / 0.210
G11     148.7          11.3               10.9 +/-   12.61      29.4 +/-   12.61  0.070 / 0.210
G23     154.6          42.3               11.2 +/-    0.78      15.7 +/-    0.78  0.060 / 0.080
G27     55.9           31.8                8.0 +/-    0.57      13.4 +/-    0.57  0.080 / 0.090
G28     236.4          29.0                8.3 +/-    2.80      14.9 +/-    2.80  0.050 / 0.070
G30     303.2          37.6                8.0 +/-    0.97      12.0 +/-    0.97  0.060 / 0.070