PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-15:28:10
G02     212.9          54.6               12.6 +/-    0.94      15.1 +/-    0.94  0.040 / 0.090
G06     74.1           78.3               10.4 +/-    0.52      10.6 +/-    0.52  0.040 / 0.090
G12     317.4          32.3                9.4 +/-    1.11      15.8 +/-    1.11  0.070 / 0.100
G17     56.1           32.6                7.6 +/-    0.53      12.7 +/-    0.53  0.060 / 0.110
G19     37.4           50.2                7.9 +/-    0.45       9.9 +/-    0.45  0.030 / 0.030
G24     273.3          41.9                8.8 +/-    1.10      12.4 +/-    1.10  0.030 / 0.030
G28     120.4          16.0                8.7 +/-    1.26      21.1 +/-    1.26  0.050 / 0.070