Speeding up Python 'for' Loop with nested 'if' Statements

I'm trying to speed up this loop I'm running to separate data into 2 categories. Normally I wouldn't care all that much about speed, but I am finding that right now the speed of this code is actually slowing down dramatically after multiple iterations. Here is how I wrote the code:

plane1Data = []
plane2Data = []
plane1Times = []
plane2Times = []
plane1Dets = []
plane2Dets = []
t1 = time.time()
for i in range(0,len(adcBoardVals)):#10000):
    tic = time.time()
    if adcBoardVals[i] == 5:
        if adcChannel[i] == 0:
            #detectorVal = detectorVal + [0]
            plane1Data = plane1Data + [rawDataMat[i,:]]
            plane1Times = plane1Times + [timeVals[i]]
            plane1Dets = plane1Dets + [0]
        elif adcChannel[i] == 1:
            #detectorVal = detectorVal + [1]
            plane1Data = plane1Data + [rawDataMat[i,:]]
            plane1Times = plane1Times + [timeVals[i]]
            plane1Dets = plane1Dets + [1]
        elif adcChannel[i] == 2:
            #detectorVal = detectorVal + [2]
            plane1Data = plane1Data + [rawDataMat[i,:]]
            plane1Times = plane1Times + [timeVals[i]]
            plane1Dets = plane1Dets + [2]
        elif adcChannel[i] == 3:
            #detectorVal = detectorVal + [3]
            plane1Data = plane1Data + [rawDataMat[i,:]]
            plane1Times = plane1Times + [timeVals[i]]
            plane1Dets = plane1Dets + [3]
        elif adcChannel[i] == 4:
            #detectorVal = detectorVal + [4]
            plane1Data = plane1Data + [rawDataMat[i,:]]
            plane1Times = plane1Times + [timeVals[i]]
            #plane1Dets = plane1Dets + [4]
        elif adcChannel[i] == 5:
            #detectorVal = detectorVal + [5]
            plane1Data = plane1Data + [rawDataMat[i,:]]
            plane1Times = plane1Times + [timeVals[i]]
            plane1Dets = plane1Dets + [5]
        elif adcChannel[i] == 6:
            #detectorVal = detectorVal + [6]
            plane1Data = plane1Data + [rawDataMat[i,:]]
            plane1Times = plane1Times + [timeVals[i]]
            plane1Dets = plane1Dets + [6]
        elif adcChannel[i] == 7:
            #detectorVal = detectorVal + [7]
            plane1Data = plane1Data + [rawDataMat[i,:]]
            plane1Times = plane1Times + [timeVals[i]]
            plane1Dets = plane1Dets + [7]
    elif adcBoardVals[i] == 7:
        if adcChannel[i] == 0:
            #detectorVal = detectorVal + [16]
            plane2Data = plane2Data + [rawDataMat[i,:]]
            plane2Times = plane2Times + [timeVals[i]]
            plane2Dets = plane2Dets + [16]
        elif adcChannel[i] == 1:
            #detectorVal = detectorVal + [17]
            plane2Data = plane2Data + [rawDataMat[i,:]]
            plane2Times = plane2Times + [timeVals[i]]
            plane2Dets = plane2Dets + [17]
        elif adcChannel[i] == 2:
            #detectorVal = detectorVal + [18]
            plane2Data = plane2Data + [rawDataMat[i,:]]
            plane2Times = plane2Times + [timeVals[i]]
            plane2Dets = plane2Dets + [18]
        elif adcChannel[i] == 3:
            #detectorVal = detectorVal + [19]
            plane2Data = plane2Data + [rawDataMat[i,:]]
            plane2Times = plane2Times + [timeVals[i]]
            plane2Dets = plane2Dets + [19]
        elif adcChannel[i] == 4:
            #detectorVal = detectorVal + [20]
            plane2Data = plane2Data + [rawDataMat[i,:]]
            plane2Times = plane2Times + [timeVals[i]]
            plane2Dets = plane2Dets + [20]
        elif adcChannel[i] == 5:
            #detectorVal = detectorVal + [21]
            plane2Data = plane2Data + [rawDataMat[i,:]]
            plane2Times = plane2Times + [timeVals[i]]
            plane2Dets = plane2Dets + [21]
        elif adcChannel[i] == 6:
            #detectorVal = detectorVal + [22]
            plane2Data = plane2Data + [rawDataMat[i,:]]
            plane2Times = plane2Times + [timeVals[i]]
            plane2Dets = plane2Dets + [22]
        elif adcChannel[i] == 7:
            #detectorVal = detectorVal + [23]
            plane2Data = plane2Data + [rawDataMat[i,:]]
            plane2Times = plane2Times + [timeVals[i]]
            plane2Dets = plane2Dets + [23]
    elif adcBoardVals[i] == 6:
        if adcChannel[i] == 0:
            #detectorVal = detectorVal + [8]
            plane1Data = plane1Data + [rawDataMat[i,:]]
            plane1Times = plane1Times + [timeVals[i]]
            plane1Dets = plane1Dets + [8]
        elif adcChannel[i] == 1:
            #detectorVal = detectorVal + [9]
            plane1Data = plane1Data + [rawDataMat[i,:]]
            plane1Times = plane1Times + [timeVals[i]]
            plane1Dets = plane1Dets + [9]
        elif adcChannel[i] == 2:
            #detectorVal = detectorVal + [10]
            plane1Data = plane1Data + [rawDataMat[i,:]]
            plane1Times = plane1Times + [timeVals[i]]
            plane1Dets = plane1Dets + [10]
        elif adcChannel[i] == 3:
            #detectorVal = detectorVal + [11]
            plane1Data = plane1Data + [rawDataMat[i,:]]
            plane1Times = plane1Times + [timeVals[i]]
            plane1Dets = plane1Dets + [11]
        elif adcChannel[i] == 4:
            #detectorVal = detectorVal + [12]
            plane2Data = plane2Data + [rawDataMat[i,:]]
            plane2Times = plane2Times + [timeVals[i]]
            plane2Dets = plane2Dets + [12]
        elif adcChannel[i] == 5:
            #detectorVal = detectorVal + [13]
            plane2Data = plane2Data + [rawDataMat[i,:]]
            plane2Times = plane2Times + [timeVals[i]]
            plane2Dets = plane2Dets + [13]
        elif adcChannel[i] == 6:
            #detectorVal = detectorVal + [14]
            plane2Data = plane2Data + [rawDataMat[i,:]]
            plane2Times = plane2Times + [timeVals[i]]
            plane2Dets = plane2Dets + [14]
        elif adcChannel[i] == 7:
            #detectorVal = detectorVal + [15]
            plane2Data = plane2Data + [rawDataMat[i,:]]
            plane2Times = plane2Times + [timeVals[i]]
            plane2Dets = plane2Dets + [15]
    if i%100000 == 0:
        print('k = ',i)   
        toc = time.time()
        print('tictoc = ',toc-tic)
        print('elapsed = ',toc-t1)
    elif i>900000:
        if i%1000 == 0:
            print('k = ',i)
            toc = time.time()
            print('tictoc = ',toc-tic)
            print('elapsed = ',toc-t1)

#detectorVal = np.array(detectorVal,dtype='float')
plane1Data = np.array(plane1Data,dtype='float')
plane2Data = np.array(plane2Data,dtype='float')
plane1Times = np.array(plane1Times,dtype='float')
plane2Times = np.array(plane2Times,dtype='float')
plane1Dets = np.array(plane1Dets,dtype='int')
plane2Dets = np.array(plane2Dets,dtype='int')

I vaguely remember from a c++ course I took a while ago that you can make lists that can run faster than nested 'if' statements. Is this correct and if so can I do this in python? I am running python 3.5 right now. Thank you for your help.