PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-01:12:40
G01     82.7           33.0                6.1 +/-    1.19      10.0 +/-    1.19  0.040 / 0.050
G07     130.8          40.2                9.1 +/-    1.03      13.2 +/-    1.03  0.050 / 0.070
G11     64.5           38.7                6.8 +/-    1.01      10.1 +/-    1.01  0.080 / 0.050
G13     287.9          37.0                6.7 +/-    1.43      10.3 +/-    1.43  0.070 / 0.060
G15     310.2          13.1                6.7 +/-    2.73      17.4 +/-    2.73  0.050 / 0.090
G17     220.3          58.1                9.3 +/-    1.38      10.7 +/-    1.38  0.070 / 0.090
G19     217.8          33.2                9.7 +/-    1.32      15.9 +/-    1.32  0.050 / 0.070
G28     2.7            61.0                6.6 +/-    0.61       7.4 +/-    0.61  0.070 / 0.090
G30     122.9          66.4                8.6 +/-    0.60       9.3 +/-    0.60  0.040 / 0.090