Explain this to me

This table contains stats for heroes' picks and bans.
Rank is used to sort heroes by winrate, taking number of their picks and bans into account. Higher rank means the hero is stronger. Rev-Rank (Reverse Rank) is used to show the least effective heroes with the most number of matches.
Balance metric estimates how balanced the meta is (0 to 100)

Median hero picks (mp): 9 - Median hero bans (mb): 1 - Matches: 49

Remove low picks (0.9mp) Remove low bans (0.9mb)

Balance rank	Winrate	Pickrate	Contest Rate
60.2	76.1	44.6	43.8

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Clockwerk	19	38.78%	100.00	45.56	13	69.23%	1.4	6	83.33%	6.0
Alchemist	13	26.53%	98.89	28.89	6	83.33%	0.7	7	71.43%	7.0
Necrophos	44	89.80%	97.78	93.33	18	61.11%	2.0	26	42.31%	26.0
Ancient Apparition	42	85.71%	96.67	90.00	22	54.55%	2.4	20	50.00%	20.0
Spirit Breaker	14	28.57%	95.56	44.44	12	75.00%	1.3	2	0.00%	2.0
Ember Spirit	9	18.37%	94.44	26.67	8	75.00%	0.9	1	100.00%	1.0
Nyx Assassin	33	67.35%	93.33	82.22	20	50.00%	2.2	13	61.54%	13.0
Rubick	8	16.33%	92.22	18.89	6	83.33%	0.7	2	50.00%	2.0
Nature's Prophet	46	93.88%	91.11	96.67	12	41.67%	1.3	34	50.00%	34.0
Night Stalker	36	73.47%	90.00	92.22	10	50.00%	1.1	26	50.00%	26.0
Earth Spirit	14	28.57%	88.89	52.22	11	63.64%	1.2	3	66.67%	3.0
Lich	35	71.43%	87.78	91.11	11	54.55%	1.2	24	45.83%	24.0
Queen of Pain	14	28.57%	86.67	50.00	6	66.67%	0.7	8	62.50%	8.0
Broodmother	32	65.31%	85.56	87.78	6	66.67%	0.7	26	42.31%	26.0
Legion Commander	12	24.49%	84.44	41.11	3	100.00%	0.3	9	44.44%	9.0
Venomancer	47	95.92%	83.33	97.78	22	36.36%	2.4	25	52.00%	25.0
Axe	3	6.12%	82.22	5.56	3	100.00%	0.3	0	0.00%	0.0
Faceless Void	17	34.69%	81.11	64.44	8	50.00%	0.9	9	66.67%	9.0
Jakiro	5	10.20%	80.00	14.44	5	80.00%	0.6	0	0.00%	0.0
Monkey King	18	36.73%	78.89	71.11	10	50.00%	1.1	8	62.50%	8.0
Mirana	12	24.49%	77.78	54.44	10	60.00%	1.1	2	50.00%	2.0
Juggernaut	5	10.20%	76.67	8.89	2	100.00%	0.2	3	66.67%	3.0
Zeus	3	6.12%	75.56	3.33	2	100.00%	0.2	1	100.00%	1.0
Bane	13	26.53%	74.44	61.11	10	60.00%	1.1	3	33.33%	3.0
Brewmaster	11	22.45%	73.33	56.67	10	60.00%	1.1	1	0.00%	1.0
Io	22	44.90%	72.22	77.78	3	66.67%	0.3	19	42.11%	19.0
Bounty Hunter	7	14.29%	71.11	31.11	5	60.00%	0.6	2	100.00%	2.0
Doom	7	14.29%	71.11	31.11	5	60.00%	0.6	2	100.00%	2.0
Puck	29	59.18%	68.89	94.44	15	33.33%	1.7	14	57.14%	14.0
Witch Doctor	9	18.37%	67.78	43.33	4	50.00%	0.4	5	80.00%	5.0
Disruptor	11	22.45%	66.67	57.78	7	42.86%	0.8	4	100.00%	4.0
Lone Druid	9	18.37%	65.56	37.78	2	100.00%	0.2	7	42.86%	7.0
Meepo	3	6.12%	64.44	4.44	1	100.00%	0.1	2	100.00%	2.0
Drow Ranger	16	32.65%	63.33	73.33	7	42.86%	0.8	9	55.56%	9.0
Lycan	13	26.53%	62.22	68.89	7	57.14%	0.8	6	33.33%	6.0
Lifestealer	4	8.16%	61.11	16.67	4	75.00%	0.4	0	0.00%	0.0
Bloodseeker	13	26.53%	60.00	66.67	5	40.00%	0.6	8	62.50%	8.0
Sven	19	38.78%	58.89	85.56	9	44.44%	1.0	10	40.00%	10.0
Batrider	32	65.31%	57.78	98.89	13	30.77%	1.4	19	42.11%	19.0
Terrorblade	8	16.33%	56.67	48.89	6	50.00%	0.7	2	100.00%	2.0
Kunkka	8	16.33%	55.56	53.33	7	57.14%	0.8	1	0.00%	1.0
Earthshaker	35	71.43%	54.44	100.00	24	29.17%	2.7	11	36.36%	11.0
Clinkz	3	6.12%	53.33	10.00	2	100.00%	0.2	1	0.00%	1.0
Silencer	10	20.41%	52.22	62.22	5	20.00%	0.6	5	100.00%	5.0
Chaos Knight	10	20.41%	51.11	63.33	5	40.00%	0.6	5	60.00%	5.0
Enchantress	15	30.61%	50.00	76.67	2	50.00%	0.2	13	38.46%	13.0
Pugna	14	28.57%	48.89	83.33	9	44.44%	1.0	5	20.00%	5.0
Beastmaster	6	12.24%	47.78	51.11	6	50.00%	0.7	0	0.00%	0.0
Razor	5	10.20%	46.67	38.89	4	50.00%	0.4	1	100.00%	1.0
Phantom Lancer	10	20.41%	45.56	70.00	4	25.00%	0.4	6	66.67%	6.0
Winter Wyvern	3	6.12%	44.44	17.78	3	66.67%	0.3	0	0.00%	0.0
Templar Assassin	8	16.33%	43.33	58.89	3	66.67%	0.3	5	20.00%	5.0
Timbersaw	3	6.12%	42.22	11.11	1	100.00%	0.1	2	50.00%	2.0
Dark Seer	9	18.37%	41.11	67.78	3	33.33%	0.3	6	50.00%	6.0
Huskar	2	4.08%	40.00	2.22	0	0.00%	0.0	2	100.00%	2.0
Viper	11	22.45%	38.89	84.44	7	28.57%	0.8	4	50.00%	4.0
Sniper	4	8.16%	37.78	22.22	1	100.00%	0.1	3	33.33%	3.0
Shadow Shaman	10	20.41%	36.67	81.11	8	25.00%	0.9	2	100.00%	2.0
Arc Warden	4	8.16%	35.56	40.00	4	50.00%	0.4	0	0.00%	0.0
Weaver	11	22.45%	34.44	86.67	5	20.00%	0.6	6	50.00%	6.0
Chen	5	10.20%	33.33	36.67	1	100.00%	0.1	4	25.00%	4.0
Riki	1	2.04%	32.22	1.11	1	100.00%	0.1	0	0.00%	0.0
Shadow Demon	1	2.04%	32.22	7.78	1	100.00%	0.1	0	0.00%	0.0
Phantom Assassin	1	2.04%	32.22	7.78	1	100.00%	0.1	0	0.00%	0.0
Invoker	5	10.20%	28.89	47.78	2	0.00%	0.2	3	100.00%	3.0
Tidehunter	2	4.08%	27.78	13.33	1	100.00%	0.1	1	0.00%	1.0
Lina	2	4.08%	27.78	13.33	1	100.00%	0.1	1	0.00%	1.0
Oracle	11	22.45%	25.56	95.56	7	14.29%	0.8	4	50.00%	4.0
Storm Spirit	3	6.12%	24.44	27.78	1	0.00%	0.1	2	100.00%	2.0
Anti-Mage	9	18.37%	23.33	88.89	3	33.33%	0.3	6	16.67%	6.0
Skywrath Mage	2	4.08%	22.22	25.56	2	50.00%	0.2	0	0.00%	0.0
Vengeful Spirit	2	4.08%	22.22	25.56	2	50.00%	0.2	0	0.00%	0.0
Gyrocopter	2	4.08%	22.22	25.56	2	50.00%	0.2	0	0.00%	0.0
Keeper of the Light	4	8.16%	18.89	42.22	1	0.00%	0.1	3	66.67%	3.0
Death Prophet	6	12.24%	17.78	65.56	1	0.00%	0.1	5	40.00%	5.0
Dragon Knight	4	8.16%	16.67	60.00	3	33.33%	0.3	1	0.00%	1.0
Ursa	2	4.08%	15.56	15.56	0	0.00%	0.0	2	50.00%	2.0
Outworld Destroyer	6	12.24%	14.44	80.00	4	25.00%	0.4	2	0.00%	2.0
Enigma	3	6.12%	13.33	46.67	1	0.00%	0.1	2	50.00%	2.0
Omniknight	1	2.04%	12.22	35.56	1	0.00%	0.1	0	0.00%	0.0
Undying	1	2.04%	12.22	35.56	1	0.00%	0.1	0	0.00%	0.0
Underlord	1	2.04%	10.00	21.11	0	0.00%	0.0	1	0.00%	1.0
Visage	3	6.12%	8.89	72.22	1	0.00%	0.1	2	0.00%	2.0
Warlock	1	2.04%	7.78	35.56	1	0.00%	0.1	0	0.00%	0.0
Slardar	1	2.04%	7.78	35.56	1	0.00%	0.1	0	0.00%	0.0
Slark	2	4.08%	5.56	55.56	1	0.00%	0.1	1	0.00%	1.0
Troll Warlord	3	6.12%	4.44	75.56	2	0.00%	0.2	1	0.00%	1.0
Sand King	3	6.12%	3.33	78.89	3	0.00%	0.3	0	0.00%	0.0
Windranger	3	6.12%	2.22	75.56	2	0.00%	0.2	1	0.00%	1.0
Tiny	1	2.04%	1.11	21.11	0	0.00%	0.0	1	0.00%	1.0