每一个mat的数据导入后workspace有三个：

M为两个导联的心电数据（360hz，单位mv），

ATRTIMED为标注的时间（单位s），

ANNOTD为ATRTIMED处的标记。

% ×¢ÊÍ´úÂë      ˵Ã÷

% 0     No TQRS

% 1     N   Normal beat                                   Õý³£²«¶¯   

% 2     L   Left bundle branch block beat                 ×óÊøÖ§´«µ¼×èÖÍ

% 3     R   Right bundle branch block beat                ÓÒÊøÖ§´«µ¼×èÖÍ

% 4     a   Aberrated atrial premature beat               Òì³£·¿ÐÔÔ粫

% 5     V   Premature ventricular contraction             ╩млнну▓Ф

% 6     F   Fusuion of ventricular and normal beat        ÐÄÊÒÈÚºÏÐÄÌø

% 7     J   Nodal (junctional) premature beat             ½»½ηΠΤΤ粫 

% 8     A   Atrial premature beat                         ·ΏΠΤΤ粫

% 9     S   Premature or ectopic supraventricular beat    室上性早搏或者异位心搏 

% 10    E   Ventricular escape beat                       ЪвадвнВЋ 

% 11    j   Nodal (junctional) escape beat                ½»½çĐỔƯ²«

% 12    /   Paced beat                                    Æð²«ÐÄÌø

% 13    Q   Unclassifiable beat                           δ·ÖÀàÐÄÌø 

% 14    ~   Signal quality change

% 15        Not specified

% 16    |   Isolated QRS-like artifact

% 17        Not specified

% 18    s   ST change

% 19    T   T-wave change

% 20    *   Systole

% 21    D   Diastole

% 22    "   Comment annotation

% 23    =   Measurement annotation

% 24    p   P-wave peak

% 25    B   Left or right bundle branch block

% 26    ^   Non-conducted pacer spike

% 27    t   T-wave peak

% 28    +   Rythm change

% 29    u   U-wave peak

% 30    ?   Learning

% 31    !   Ventricular flutter wave                                สาฦห

% 32    [   Start of ventricular flutter/fibrillation

% 33    ]   End of ventricular flutter/fibrillation

% 34    e   Atrial escape beat                           ·¿ĐỔƯ²«

% 35    n   Supraventricular espace beat                 йриоптрщ╡╚

% 36        Not specified

% 37    x   Non-conducted P-wave (blocked APB)

% 38    f   Fusion of paced and normal beat              起搏心跳和正常心跳的融合

% 39    (   Waveform onset, PQ junction(begin of QRS)

% 40    )   Waveform end, JPT(J point, end of QRS)

% 41    r   R-on-T premature ventricular contraction     R-on-Tлн╩млнну▓Ф