PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-01:58:00
G01     82.7           33.0                3.6 +/-    1.02       6.0 +/-    1.02  0.040 / 0.040
G07     130.8          40.1                5.8 +/-    1.14       8.5 +/-    1.14  0.040 / 0.040
G11     64.2           38.4                4.1 +/-    0.91       6.1 +/-    0.91  0.040 / 0.090
G13     288.0          36.9                5.1 +/-    1.16       7.8 +/-    1.16  0.050 / 0.090
G15     310.1          13.1                3.7 +/-    3.06       9.7 +/-    3.06  0.080 / 0.050
G17     220.3          58.6                8.5 +/-    1.20       9.7 +/-    1.20  0.060 / 0.040
G19     217.8          33.4                6.2 +/-    1.11      10.2 +/-    1.11  0.050 / 0.070
G28     2.8            61.0                3.7 +/-    0.44       4.1 +/-    0.44  0.070 / 0.100
G30     122.8          66.5                6.9 +/-    0.38       7.5 +/-    0.38  0.060 / 0.050