PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/29-09:57:40
G02     200.8          17.0                5.0 +/-    1.68      11.7 +/-    1.68  0.120 / 0.220
G06     171.2          51.9                8.7 +/-    1.59      10.7 +/-    1.59  0.090 / 0.210
G13     228.2          14.4                6.4 +/-    2.24      16.1 +/-    2.24  0.080 / 0.080
G17     22.9           59.5                6.3 +/-    0.33       7.2 +/-    0.33  0.070 / 0.100
G19     304.8          70.1                6.8 +/-    0.68       7.1 +/-    0.68  0.150 / 0.300
G24     309.2          31.3                4.8 +/-    1.28       8.2 +/-    1.28  0.140 / 0.420
G28     84.7           42.0                6.4 +/-    0.52       9.0 +/-    0.52  0.040 / 0.050
G30     157.5          17.9                4.2 +/-    2.08       9.8 +/-    2.08  0.050 / 0.040