PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/27-18:27:40
G02     9.4            71.0               16.1 +/-    0.96      17.0 +/-    0.96  0.140 / 0.340
G05     163.8          42.4               18.2 +/-    0.92      25.5 +/-    0.92  0.130 / 0.360
G06     45.9           29.7               12.6 +/-    0.58      22.2 +/-    0.58  0.030 / 0.030
G12     262.2          79.7               14.0 +/-    0.63      14.2 +/-    0.63  0.020 / 0.030
G19     87.2           18.2               14.5 +/-    1.47      33.3 +/-    1.47  0.060 / 0.080
G20     197.3          11.0                6.3 +/-   36.07      17.2 +/-   36.07  0.050 / 0.090
G24     220.9          14.8               14.0 +/-    3.49      34.9 +/-    3.49  0.060 / 0.140
G25     311.8          44.1               13.2 +/-    0.96      18.1 +/-    0.96  0.050 / 0.170
G29     296.5          18.6               13.2 +/-    0.91      30.1 +/-    0.91  0.040 / 0.070