$GPGGA,111255.00,3110.4904,N,12123.8925,E,7,08,1.2,38.97,M,11.48,M,,*54$GPGGA,111256.00,3110.4904,N,12123.8925,E,7,08,1.2,38.97,M,11.48,M,,*57如上GPGGA信息中,定位信息为7(即E后面一位),这表示什么意思,代表哪一种解算状态?请大家不吝指教!谢谢!