Plotting in groups by two variables?

1.How should I plot strike_price to mid_value grouped by date and by maturity? i.e. I would like to get 4 plots with label "date:20160418;maturity:1","date:20160418;maturity:2","date:20160419;maturity:1","date:20160419;maturity:2". 2.Another two plots with 2 lines each. i.e. plot A:"date:20160418;maturity:1","date:20160418;maturity:2" and plot B:"date:20160419;maturity:1","date:20160419;maturity:2". Thank you in advance!!!!!!

date = {'20160419';'20160419';'20160419';'20160419';'20160419';'20160419';'20160418';'20160418';'20160418';'20160418'};
cp_flag = {'C';'C';'C';'P';'P';'P';'C';'C';'P';'P'};
maturity = [2;2;1;2;2;1;2;1;2;1];
strike_price = [40;30;20;40;30;20;40;30;40;30];
mid_value = [0.021; 0.022; 0.033; NaN; 0.025;0.026;0.027; 0.028; 0.039; 0.041];
T = table(date,cp_flag,maturity,strike_price,mid_value)

T =

10×5 table

       date       cp_flag    maturity    strike_price    mid_value
    __________    _______    ________    ____________    _________

    '20160419'    'C'        2           40              0.021    
    '20160419'    'C'        2           30              0.022    
    '20160419'    'C'        1           20              0.033    
    '20160419'    'P'        2           40              NaN    
    '20160419'    'P'        2           30              0.025    
    '20160419'    'P'        1           20              0.026    
    '20160418'    'C'        2           40              0.027    
    '20160418'    'C'        1           30              0.028    
    '20160418'    'P'        2           40              0.039    
    '20160418'    'P'        1           30              0.041