NQ疑问，网络质量测试显示的准确吗

为什么我用itdog ping的时候，国内正常，用NQ显示的都是空

ipv6

四、三网TCP大包延迟（依次为电信|联通|移动 Step=80ms） 京⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  

津⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   冀⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   晋⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  

蒙⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   辽⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   吉⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  

黑⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   沪⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   苏⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  

浙⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   皖⠀⠀⠀⠀⠀0  ⡀⣀⣀⣀⣀20 ⠀⠀⠀⠀⠀0   闽⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  

赣⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   鲁⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   豫⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  

鄂⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   湘⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   粤⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  

桂⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   琼⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   渝⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  

川⢸⣀⡀⠀⠀220⠀⠀⠀⠀⣀16 ⠀⠀⠀⠀⠀0   贵⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   云⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  

藏⡀⠀⠀⠀⠀5  ⠀⠀⢀⣀⠀5  ⠀⠀⠀⠀⠀0   陕⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   甘⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  

青⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   宁⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0   新⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0  ⠀⠀⠀⠀⠀0