$D$2: =C2/60
$D$3: =C3/60
$D$4: =C4/60
$D$5: =C5/60
$D$6: =C6/60
$H$6: =COUNT(C2:C21)
$I$6: =AVERAGE(D2:D21)
$J$6: =STDEV.P(D2:D21)
$K$6: =J6/SQRT(H6)
$D$7: =C7/60
$H$7: =COUNT(C22:C37)
$I$7: =AVERAGE(D22:D37)
$J$7: =STDEV.P(D22:D37)
$K$7: =J7/SQRT(H7)
$D$8: =C8/60
$H$8: =COUNT(D38:D55)
$I$8: =AVERAGE(D38:D55)
$J$8: =STDEV.P(D38:D55)
$K$8: =J8/SQRT(H8)
$D$9: =C9/60
$D$10: =C10/60
$D$11: =C11/60
$D$12: =C12/60
$D$13: =C13/60
$D$14: =C14/60
$D$15: =C15/60
$D$16: =C16/60
$D$17: =C17/60
$D$18: =C18/60
$D$19: =C19/60
$D$20: =C20/60
$D$21: =C21/60
$D$22: =C22/60
$D$23: =C23/60
$D$24: =C24/60
$D$25: =C25/60
$D$26: =C26/60
$D$27: =C27/60
$D$28: =C28/60
$H$28: =COUNT(E2:E21)
$I$28: =AVERAGE(E2:E21)
$J$28: =STDEV.P(E2:E21)
$K$28: =J28/SQRT(H28)
$D$29: =C29/60
$H$29: =COUNT(E22:E37)
$I$29: =AVERAGE(E22:E37)
$J$29: =STDEV.P(E22:E37)
$K$29: =J29/SQRT(H29)
$D$30: =C30/60
$H$30: =COUNT(E38:E55)
$I$30: =AVERAGE(E38:E55)
$J$30: =STDEV.P(E38:E55)
$K$30: =J30/SQRT(H30)
$D$31: =C31/60
$D$32: =C32/60
$D$33: =C33/60
$D$34: =C34/60
$D$35: =C35/60
$D$36: =C36/60
$D$37: =C37/60
$D$38: =C38/60
$D$39: =C39/60
$D$40: =C40/60
$D$41: =C41/60
$D$42: =C42/60
$D$43: =C43/60
$D$44: =C44/60
$D$45: =C45/60
$D$46: =C46/60
$D$47: =C47/60
$D$48: =C48/60
$D$49: =C49/60
$D$50: =C50/60
$D$51: =C51/60
$D$52: =C52/60
$D$53: =C53/60
$D$54: =C54/60
$D$55: =C55/60
