def quarter_count(lst):
    """
	count number of beta values falling into each quarter
	Note: beta >= 0 and beta <=1
	"""
    q1 = 0
    q2 = 0
    q3 = 0
    q4 = 0
    for i in lst:
        try:
            j = float(i)
        except:
            continue
        if not isinstance(j, float):
            continue
        if j < 0:
            continue
        elif j <= 0.25:
            q1 += 1
        elif j <= 0.5:
            q2 += 1
        elif j <= 0.75:
            q3 += 1
        elif j <= 1:
            q4 += 1
        else:
            continue
    return [q1, q2, q3, q4]
