PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-15:27:40
G02     246.6          74.0                8.6 +/-    0.76       8.9 +/-    0.76  0.050 / 0.050
G05     172.3          17.6               12.8 +/-    1.79      29.9 +/-    1.79  0.040 / 0.040
G06     40.2           53.6                7.6 +/-    0.56       9.2 +/-    0.56  0.070 / 0.160
G12     322.2          59.3                7.4 +/-    0.61       8.5 +/-    0.61  0.070 / 0.180
G17     74.5           19.0                7.5 +/-    0.78      17.0 +/-    0.78  0.030 / 0.050
G19     57.0           40.3                8.5 +/-    0.75      12.4 +/-    0.75  0.020 / 0.050
G24     238.8          32.3               10.7 +/-    0.78      17.9 +/-    0.78  0.100 / 0.290
G25     317.1          17.1                5.9 +/-    2.10      14.0 +/-    2.10  0.120 / 0.220