rewrite this to only include the hormones involved in the ovulation phase in bullet points with any additional information about the hormones included.

Ovulation always occurs 14 days before menses; therefore, with an average 28-day cycle, ovulation occurs on day 14. At the end of the proliferative phase, 17-beta-estradiol levels are at a high due to the follicle maturation and increased production of the hormone. During this time only, 17-beta-estradiol provides positive feedback for FSH and LH production. This occurs when a critical level of 17-beta-estradiol is reached, at least 200 picograms per milliliter of plasma. The high levels of FSH and LH present during this time is called the LH surge. As a result, the mature follicle breaks, and an oocyte is released. The changes to the cervix as initiated during the follicular phase further increase, allowing for increased, waterier cervical mucous to better accommodate the possible sperm—the levels of 17-beta-estradiol fall at the end of ovulation. 
The hormones involved in the ovulation phase, which is after the proliferative phase and is always 14 days before menses, include the following:

* 17-beta-estradiol (levels are at a high, at least 200 picograms per milliliter of plasma, then fall at the end of ovulation)
* FSH (17-beta-estradiol triggers this at a level of at least 200 picograms per milliliter of plasma)
* LH (17-beta-estradiol triggers this at a level of at least 200 picograms per milliliter of plasma)
* The high levels of FSH and LH that occur in reaction to critical levels of 17-beta-estradiol is referred to as an "LH surge,"
