PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-20:27:50
G02     6.4            71.6                9.5 +/-    2.18       9.9 +/-    2.18  0.030 / 0.040
G05     161.5          44.2               14.1 +/-    2.87      19.2 +/-    2.87  0.030 / 0.040
G06     46.3           28.5                9.4 +/-    2.01      17.0 +/-    2.01  0.220 / 0.360
G12     252.0          80.2               11.4 +/-    2.71      11.5 +/-    2.71  0.170 / 0.390
G19     87.8           17.8               -3.7 +/-   55.70      -8.5 +/-   55.70  0.030 / 0.020
G20     197.0          12.0               11.7 +/-   31.49      31.1 +/-   31.49  0.030 / 0.040
G24     220.5          14.4               14.5 +/-    4.52      36.7 +/-    4.52  0.060 / 0.060
G25     311.0          45.5               10.9 +/-    2.32      14.6 +/-    2.32  0.050 / 0.060
G29     296.4          18.1               11.8 +/-    4.29      27.2 +/-    4.29  0.100 / 0.150