PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-14:12:40
G02     201.1          14.6                5.6 +/-    1.29      14.0 +/-    1.29  0.130 / 0.290
G06     169.1          52.1                6.6 +/-    0.95       8.1 +/-    0.95  0.110 / 0.300
G13     229.3          15.3                5.1 +/-    2.72      12.5 +/-    2.72  0.080 / 0.160
G17     20.7           61.0                5.0 +/-    0.32       5.6 +/-    0.32  0.080 / 0.180
G19     299.0          69.8                4.5 +/-    0.94       4.7 +/-    0.94  0.040 / 0.040
G24     311.2          28.7                2.8 +/-    1.78       5.1 +/-    1.78  0.060 / 0.040
G28     83.7           41.8                4.7 +/-    0.97       6.6 +/-    0.97  0.100 / 0.280
G30     157.3          19.5                6.4 +/-    1.50      14.3 +/-    1.50  0.130 / 0.240