def compute_squared_bp(channels):
    """Compute band power estimates by squaring channel values."""
    squared_channels = dict()
    for channel in channels:
        if channel == "Time":
            squared_channels[channel] = channels[channel][:]
            continue
        squared_channel = [x**2 for x in channels[channel]]
        squared_channels[channel] = squared_channel

    return squared_channels