PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/18-03:13:00
G01     88.8           32.1                4.6 +/-    0.70       7.7 +/-    0.70  0.060 / 0.040
G07     126.6          44.4                5.5 +/-    0.35       7.4 +/-    0.35  0.050 / 0.040
G11     69.2           40.1                3.1 +/-    1.68       4.5 +/-    1.68  0.050 / 0.030
G13     294.3          35.7                4.1 +/-    2.75       6.5 +/-    2.75  0.030 / 0.040
G15     314.0          11.1               -1.1 +/-   14.21      -3.0 +/-   14.21  0.040 / 0.050
G17     215.7          54.5                5.3 +/-    0.94       6.3 +/-    0.94  0.040 / 0.050
G19     215.2          29.0                5.6 +/-    1.72      10.1 +/-    1.72  0.110 / 0.160
G28     353.1          61.6                3.5 +/-    1.01       3.9 +/-    1.01  0.090 / 0.180
G30     111.7          71.9                4.0 +/-    0.65       4.2 +/-    0.65  0.090 / 0.100