PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-16:43:10
G02     203.2          30.0               15.8 +/-    1.67      27.7 +/-    1.67  0.140 / 0.320
G06     158.3          67.7               14.5 +/-    0.87      15.5 +/-    0.87  0.080 / 0.240
G12     307.3          16.7                8.7 +/-    2.70      20.8 +/-    2.70  0.080 / 0.150
G17     34.0           50.7               10.9 +/-    0.43      13.6 +/-    0.43  0.110 / 0.140
G19     346.5          67.7               11.5 +/-    1.12      12.3 +/-    1.12  0.080 / 0.090
G24     299.5          37.8               12.4 +/-    0.81      18.8 +/-    0.81  0.070 / 0.130
G28     99.8           33.0               11.9 +/-    0.60      19.6 +/-    0.60  0.070 / 0.090