区域级测站单站实时地面气象要素资料文件为：（）。
A: Z_O_AWS_ST_C5_IIiii_YYYYMMDDHHmmS
B: txt
C: Z_O_AWS_PRF_C5_IIiii_YYYYMMDDHHmmS
D: txt
E: Z_SURF_I_IIiii_YYYYMMDDHHmmSS_O_AWS_FTM[-CCx].txt
F: Z_SURF_I_IIiii-REG_YYYYMMDDHHmmSS_O_AWS_FTM[-CCx].txt
A: Z_O_AWS_ST_C5_IIiii_YYYYMMDDHHmmS
B: txt
C: Z_O_AWS_PRF_C5_IIiii_YYYYMMDDHHmmS
D: txt
E: Z_SURF_I_IIiii_YYYYMMDDHHmmSS_O_AWS_FTM[-CCx].txt
F: Z_SURF_I_IIiii-REG_YYYYMMDDHHmmSS_O_AWS_FTM[-CCx].txt
