PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-04:27:40
G02     202.2          36.0                6.1 +/-    0.98       9.5 +/-    0.98  0.080 / 0.110
G06     166.7          66.6                4.8 +/-    0.39       5.2 +/-    0.39  0.070 / 0.110
G12     306.9          13.5                2.1 +/-    3.24       5.3 +/-    3.24  0.040 / 0.050
G17     34.4           50.7                2.8 +/-    0.96       3.6 +/-    0.96  0.040 / 0.040
G19     1.4            65.3                2.4 +/-    0.43       2.6 +/-    0.43  0.180 / 0.200
G24     299.5          37.2                1.7 +/-    3.22       2.6 +/-    3.22  0.090 / 0.170
G28     102.4          31.0                5.2 +/-    1.76       9.0 +/-    1.76  0.030 / 0.020