PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-01:42:50
G01     54.3           28.0                4.2 +/-    1.18       7.6 +/-    1.18  0.030 / 0.050
G06     180.0          19.2                7.5 +/-    3.03      16.9 +/-    3.03  0.030 / 0.050
G07     144.7          17.1                7.6 +/-    1.63      17.8 +/-    1.63  0.030 / 0.030
G11     47.0           21.6                3.2 +/-    1.40       6.8 +/-    1.40  0.030 / 0.030
G13     256.5          32.7                6.6 +/-    1.90      10.9 +/-    1.90  0.100 / 0.310
G15     287.5          16.6                5.1 +/-    1.24      12.3 +/-    1.24  0.090 / 0.260
G17     279.9          77.5                6.6 +/-    0.74       6.8 +/-    0.74  0.060 / 0.100
G19     240.0          56.3                6.7 +/-    1.00       7.9 +/-    1.00  0.070 / 0.080
G28     46.2           54.3                5.6 +/-    0.43       6.7 +/-    0.43  0.100 / 0.190
G30     146.3          42.2               10.5 +/-    0.68      14.8 +/-    0.68  0.110 / 0.230