The range of tides is affected by the relative positions of the sun and the moon. the highest high tides and the lowest low tides occur during the new moon and full moon. during the first and third quarters of the lunar month, the lowest high tides and highest low tides occur. throughout the month, the tidal range gradually increases and decreases between the minimum and maximum values of the range. 7) based on the information above, at what time would the difference between the highest y value and the lowest y value of the tide values be the greatest? 8) based on the information above, at what time would the difference between the highest y value and the lowest y value of the tide values be the lowest?