Subtract by marking and crossing out. One has been done for :@0.088154:0.086337:0.918010:0.086337:0.918010:0.061755:0.088154:0.061755:0.015746:0.017524:0.017365:0.010730:0.012615:0.015492:0.014000:0.010730:0.007268:0.016910:0.016000:0.007241:0.026413:0.015492:0.013143:0.016635:0.008825:0.017714:0.015683:0.006984:0.015492:0.017714:0.017619:0.007373:0.014000:0.012661:0.016857:0.013651:0.013651:0.008825:0.017714:0.015683:0.007226:0.016857:0.017524:0.011207:0.006508:0.007246:0.020730:0.017714:0.015492:0.007258:0.017524:0.015492:0.013651:0.007242:0.017365:0.015492:0.015492:0.017714:0.007253:0.017619:0.016857:0.017714:0.015492:0.007231:0.009222:0.016857:0.013143:0.006984
you.:@0.088149:0.115156:0.144414:0.115156:0.144414:0.090574:0.088149:0.090574:0.015376:0.016857:0.017524:0.006508
53:@0.887071:0.943673:0.906385:0.943673:0.906385:0.928923:0.887071:0.928923:0.009657:0.009657
Maths–:@0.143213:0.940536:0.183201:0.940536:0.183201:0.930703:0.143213:0.930703:0.011098:0.006273:0.004406:0.006819:0.005067:0.006324
Pre-Primer:@0.183070:0.940536:0.240124:0.940536:0.240124:0.930703:0.183070:0.930703:0.006756:0.004521:0.006400:0.003886:0.006756:0.004521:0.003124:0.010171:0.006400:0.004521
Good:@0.088601:0.966039:0.118582:0.966039:0.118582:0.956207:0.088601:0.956207:0.009283:0.006883:0.006883:0.006933
Very Good:@0.164239:0.966039:0.221371:0.966039:0.221371:0.956207:0.164239:0.956207:0.006838:0.006463:0.004846:0.005384:0.003619:0.009283:0.006883:0.006883:0.006933
Excellent:@0.269542:0.966039:0.317453:0.966039:0.317453:0.956207:0.269542:0.956207:0.006997:0.005473:0.005968:0.006463:0.002908:0.002908:0.006463:0.006997:0.003733
4 – 3 = :@0.123710:0.212402:0.220281:0.212402:0.220281:0.187820:0.123710:0.187820:0.017587:0.006984:0.015873:0.006984:0.017587:0.006984:0.017587:0.006984
8 – 4 = :@0.573079:0.212402:0.669650:0.212402:0.669650:0.187820:0.573079:0.187820:0.017587:0.006984:0.015873:0.006984:0.017587:0.006984:0.017587:0.006984
3 – 1 = :@0.123710:0.367760:0.220281:0.367760:0.220281:0.343178:0.123710:0.343178:0.017587:0.006984:0.015873:0.006984:0.017587:0.006984:0.017587:0.006984
9 – 5 = :@0.123710:0.523118:0.220281:0.523118:0.220281:0.498536:0.123710:0.498536:0.017587:0.006984:0.015873:0.006984:0.017587:0.006984:0.017587:0.006984
7 – 4 = :@0.123710:0.678477:0.220281:0.678477:0.220281:0.653895:0.123710:0.653895:0.017587:0.006984:0.015873:0.006984:0.017587:0.006984:0.017587:0.006984
9 – 8 = :@0.123710:0.833835:0.220281:0.833835:0.220281:0.809253:0.123710:0.809253:0.017587:0.006984:0.015873:0.006984:0.017587:0.006984:0.017587:0.006984
6 – 2 = :@0.573079:0.367760:0.669650:0.367760:0.669650:0.343178:0.573079:0.343178:0.017587:0.006984:0.015873:0.006984:0.017587:0.006984:0.017587:0.006984
5 – 4 = :@0.573079:0.523118:0.669650:0.523118:0.669650:0.498536:0.573079:0.498536:0.017587:0.006984:0.015873:0.006984:0.017587:0.006984:0.017587:0.006984
6 – 3 = :@0.573079:0.678477:0.669650:0.678477:0.669650:0.653895:0.573079:0.653895:0.017587:0.006984:0.015873:0.006984:0.017587:0.006984:0.017587:0.006984
7 – 2 = :@0.573079:0.833835:0.669650:0.833835:0.669650:0.809253:0.573079:0.809253:0.017587:0.006984:0.015873:0.006984:0.017587:0.006984:0.017587:0.006984
1:@0.246309:0.212320:0.263330:0.212320:0.263330:0.188529:0.246309:0.188529:0.017021