PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-01:58:00
G01     75.8           33.3                3.3 +/-    1.21       5.4 +/-    1.21  0.040 / 0.040
G07     134.9          35.0                6.7 +/-    1.16      10.7 +/-    1.16  0.030 / 0.040
G11     58.7           35.3                3.7 +/-    1.10       5.9 +/-    1.10  0.050 / 0.030
G13     280.8          37.4                4.2 +/-    1.92       6.4 +/-    1.92  0.040 / 0.040
G15     305.5          14.8                0.0 +/-    2.52       0.0 +/-    2.52  0.070 / 0.080
G17     226.9          64.0                5.2 +/-    1.06       5.7 +/-    1.06  0.080 / 0.110
G19     221.4          38.7                5.2 +/-    1.67       7.8 +/-    1.67  0.060 / 0.100
G28     13.4           60.0                2.8 +/-    0.60       3.2 +/-    0.60  0.050 / 0.090
G30     130.8          61.1                5.7 +/-    0.67       6.4 +/-    0.67  0.070 / 0.080