PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-23:57:30
G07     344.3          61.7                6.5 +/-    1.29       7.3 +/-    1.29  0.070 / 0.110
G08     88.4           53.2                7.7 +/-    0.54       9.4 +/-    0.54  0.050 / 0.100
G09     186.5          66.8                8.6 +/-    0.68       9.3 +/-    0.68  0.070 / 0.140
G11     142.8          17.0                9.5 +/-    1.33      22.6 +/-    1.33  0.080 / 0.130
G23     157.4          33.5                9.5 +/-    1.28      15.6 +/-    1.28  0.050 / 0.100
G27     48.3           26.8                5.5 +/-    1.51      10.3 +/-    1.51  0.040 / 0.110
G28     243.9          35.8                8.4 +/-    1.16      13.1 +/-    1.16  0.030 / 0.050
G30     310.4          43.1                4.7 +/-    1.11       6.5 +/-    1.11  0.030 / 0.030