PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-11:57:50
G02     201.4          16.3                4.4 +/-    2.50      10.6 +/-    2.50  0.090 / 0.100
G06     170.1          53.1                8.0 +/-    0.75       9.8 +/-    0.75  0.100 / 0.110
G13     227.8          14.0                5.3 +/-    1.84      13.4 +/-    1.84  0.120 / 0.160
G17     22.8           59.4                5.5 +/-    0.55       6.3 +/-    0.55  0.120 / 0.150
G19     304.2          69.8                5.3 +/-    0.95       5.7 +/-    0.95  0.220 / 0.480
G24     309.2          31.1                5.8 +/-    0.88       9.9 +/-    0.88  0.160 / 0.900
G28     85.6           41.4                5.1 +/-    0.94       7.2 +/-    0.94  0.040 / 0.050
G30     157.6          17.3                5.5 +/-    1.66      12.9 +/-    1.66  0.050 / 0.040