PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-05:12:50
G02     202.2          36.0                7.8 +/-    2.03      12.1 +/-    2.03  0.110 / 0.250
G06     167.8          66.2                7.4 +/-    0.88       8.0 +/-    0.88  0.100 / 0.180
G12     306.9          13.4                2.5 +/-    2.99       6.5 +/-    2.99  0.050 / 0.080
G17     34.9           50.3                3.4 +/-    0.66       4.3 +/-    0.66  0.040 / 0.090
G19     1.8            65.3                4.0 +/-    0.65       4.3 +/-    0.65  0.020 / 0.040
G24     299.6          37.1                3.4 +/-    0.42       5.2 +/-    0.42  0.030 / 0.030
G28     102.4          31.0                8.1 +/-    0.52      13.8 +/-    0.52  0.060 / 0.090