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): 4 - Median hero bans (mb): 4 - Matches: 58

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

Balance rank	Winrate	Pickrate	Contest Rate
59.9	79.0	39.4	43.3

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Batrider	58	100.00%	100.00	72.22	11	90.91%	2.8	47	55.32%	11.8
Lycan	48	82.76%	98.89	81.11	10	80.00%	2.5	38	50.00%	9.5
Centaur Warrunner	39	67.24%	97.78	73.33	25	60.00%	6.3	14	64.29%	3.5
Treant Protector	55	94.83%	96.67	87.78	30	56.67%	7.5	25	52.00%	6.3
Weaver	21	36.21%	95.56	45.56	14	71.43%	3.5	7	57.14%	1.8
Nature's Prophet	28	48.28%	94.44	70.00	22	63.64%	5.5	6	33.33%	1.5
Ancient Apparition	40	68.97%	93.33	85.56	19	63.16%	4.8	21	38.10%	5.3
Io	56	96.55%	92.22	92.22	13	30.77%	3.3	43	58.14%	10.8
Sand King	20	34.48%	91.11	55.56	8	75.00%	2.0	12	50.00%	3.0
Troll Warlord	6	10.34%	90.00	11.11	4	100.00%	1.0	2	50.00%	0.5
Disruptor	30	51.72%	88.89	74.44	18	55.56%	4.5	12	58.33%	3.0
Mirana	56	96.55%	87.78	95.56	29	44.83%	7.3	27	48.15%	6.8
Outworld Destroyer	14	24.14%	86.67	41.11	6	50.00%	1.5	8	87.50%	2.0
Lich	9	15.52%	85.56	25.56	6	83.33%	1.5	3	33.33%	0.8
Doom	38	65.52%	84.44	90.00	15	46.67%	3.8	23	47.83%	5.8
Tidehunter	15	25.86%	83.33	54.44	8	50.00%	2.0	7	85.71%	1.8
Enigma	14	24.14%	82.22	46.67	7	71.43%	1.8	7	42.86%	1.8
Enchantress	20	34.48%	81.11	67.78	9	55.56%	2.3	11	54.55%	2.8
Razor	25	43.10%	80.00	80.00	8	62.50%	2.0	17	41.18%	4.3
Slark	7	12.07%	78.89	20.00	5	80.00%	1.3	2	50.00%	0.5
Gyrocopter	22	37.93%	77.78	75.56	11	54.55%	2.8	11	45.45%	2.8
Brewmaster	40	68.97%	76.67	93.33	23	43.48%	5.8	17	41.18%	4.3
Invoker	51	87.93%	75.56	100.00	28	42.86%	7.0	23	30.43%	5.8
Dragon Knight	17	29.31%	74.44	65.56	9	55.56%	2.3	8	50.00%	2.0
Rubick	35	60.34%	73.33	91.11	18	50.00%	4.5	17	29.41%	4.3
Vengeful Spirit	7	12.07%	72.22	27.78	6	66.67%	1.5	1	100.00%	0.3
Bane	20	34.48%	71.11	78.89	12	58.33%	3.0	8	25.00%	2.0
Nyx Assassin	8	13.79%	70.00	32.22	4	50.00%	1.0	4	100.00%	1.0
Abaddon	13	22.41%	68.89	57.78	5	80.00%	1.3	8	25.00%	2.0
Puck	18	31.03%	67.78	82.22	12	41.67%	3.0	6	66.67%	1.5
Luna	9	15.52%	66.67	40.00	4	75.00%	1.0	5	40.00%	1.3
Wraith King	22	37.93%	65.56	86.67	13	46.15%	3.3	9	33.33%	2.3
Dark Seer	38	65.52%	64.44	98.89	16	12.50%	4.0	22	68.18%	5.5
Shadow Demon	33	56.90%	63.33	97.78	20	25.00%	5.0	13	69.23%	3.3
Viper	25	43.10%	62.22	94.44	12	33.33%	3.0	13	38.46%	3.3
Skywrath Mage	4	6.90%	61.11	18.89	3	66.67%	0.8	1	100.00%	0.3
Venomancer	3	5.17%	60.00	12.22	2	100.00%	0.5	1	0.00%	0.3
Shadow Fiend	11	18.97%	58.89	71.11	7	42.86%	1.8	4	50.00%	1.0
Clockwerk	5	8.62%	57.78	26.67	3	66.67%	0.8	2	50.00%	0.5
Axe	8	13.79%	56.67	47.78	4	25.00%	1.0	4	100.00%	1.0
Witch Doctor	10	17.24%	55.56	66.67	6	33.33%	1.5	4	75.00%	1.0
Tiny	8	13.79%	54.44	61.11	5	40.00%	1.3	3	66.67%	0.8
Morphling	8	13.79%	53.33	56.67	3	66.67%	0.8	5	20.00%	1.3
Lone Druid	3	5.17%	52.22	13.33	1	100.00%	0.3	2	50.00%	0.5
Drow Ranger	4	6.90%	51.11	31.11	3	66.67%	0.8	1	0.00%	0.3
Keeper of the Light	6	10.34%	50.00	48.89	5	40.00%	1.3	1	100.00%	0.3
Dazzle	11	18.97%	48.89	84.44	6	33.33%	1.5	5	40.00%	1.3
Phantom Assassin	5	8.62%	47.78	38.89	3	33.33%	0.8	2	100.00%	0.5
Earthshaker	4	6.90%	46.67	37.78	4	50.00%	1.0	0	0.00%	0.0
Chen	7	12.07%	45.56	62.22	3	33.33%	0.8	4	50.00%	1.0
Spectre	1	1.72%	44.44	4.44	1	100.00%	0.3	0	0.00%	0.0
Night Stalker	1	1.72%	44.44	6.67	1	100.00%	0.3	0	0.00%	0.0
Zeus	1	1.72%	44.44	10.00	1	100.00%	0.3	0	0.00%	0.0
Undying	1	1.72%	44.44	4.44	1	100.00%	0.3	0	0.00%	0.0
Juggernaut	1	1.72%	44.44	4.44	1	100.00%	0.3	0	0.00%	0.0
Visage	1	1.72%	44.44	4.44	1	100.00%	0.3	0	0.00%	0.0
Naga Siren	6	10.34%	37.78	44.44	1	0.00%	0.3	5	60.00%	1.3
Death Prophet	3	5.17%	36.67	16.67	0	0.00%	0.0	3	66.67%	0.8
Ember Spirit	5	8.62%	35.56	42.22	2	50.00%	0.5	3	33.33%	0.8
Templar Assassin	7	12.07%	34.44	60.00	1	0.00%	0.3	6	50.00%	1.5
Ogre Magi	2	3.45%	33.33	15.56	1	100.00%	0.3	1	0.00%	0.3
Sniper	2	3.45%	33.33	15.56	1	100.00%	0.3	1	0.00%	0.3
Leshrac	5	8.62%	31.11	63.33	4	25.00%	1.0	1	100.00%	0.3
Silencer	2	3.45%	30.00	24.44	2	50.00%	0.5	0	0.00%	0.0
Bounty Hunter	2	3.45%	30.00	24.44	2	50.00%	0.5	0	0.00%	0.0
Beastmaster	1	1.72%	27.78	5.56	0	0.00%	0.0	1	100.00%	0.3
Storm Spirit	1	1.72%	27.78	8.89	0	0.00%	0.0	1	100.00%	0.3
Riki	1	1.72%	27.78	8.89	0	0.00%	0.0	1	100.00%	0.3
Queen of Pain	3	5.17%	24.44	43.33	3	33.33%	0.8	0	0.00%	0.0
Shadow Shaman	10	17.24%	23.33	96.67	8	12.50%	2.0	2	50.00%	0.5
Bristleback	4	6.90%	22.22	58.89	3	33.33%	0.8	1	0.00%	0.3
Tinker	5	8.62%	21.11	68.89	3	33.33%	0.8	2	0.00%	0.5
Windranger	4	6.90%	20.00	64.44	4	25.00%	1.0	0	0.00%	0.0
Omniknight	2	3.45%	18.89	17.78	0	0.00%	0.0	2	50.00%	0.5
Jakiro	5	8.62%	17.78	83.33	5	20.00%	1.3	0	0.00%	0.0
Meepo	3	5.17%	16.67	33.33	0	0.00%	0.0	3	33.33%	0.8
Chaos Knight	2	3.45%	15.56	30.00	1	0.00%	0.3	1	100.00%	0.3
Anti-Mage	2	3.45%	15.56	30.00	1	0.00%	0.3	1	100.00%	0.3
Slardar	2	3.45%	13.33	53.33	1	0.00%	0.3	1	0.00%	0.3
Pugna	2	3.45%	13.33	53.33	1	0.00%	0.3	1	0.00%	0.3
Bloodseeker	2	3.45%	13.33	53.33	1	0.00%	0.3	1	0.00%	0.3
Magnus	2	3.45%	13.33	53.33	1	0.00%	0.3	1	0.00%	0.3
Faceless Void	3	5.17%	8.89	77.78	2	0.00%	0.5	1	0.00%	0.3
Pudge	1	1.72%	7.78	22.22	0	0.00%	0.0	1	0.00%	0.3
Lina	1	1.72%	6.67	36.67	1	0.00%	0.3	0	0.00%	0.0
Tusk	1	1.72%	6.67	36.67	1	0.00%	0.3	0	0.00%	0.0
Huskar	1	1.72%	6.67	36.67	1	0.00%	0.3	0	0.00%	0.0
Lifestealer	3	5.17%	3.33	77.78	2	0.00%	0.5	1	0.00%	0.3
Timbersaw	4	6.90%	2.22	88.89	3	0.00%	0.8	1	0.00%	0.3
Medusa	1	1.72%	1.11	22.22	0	0.00%	0.0	1	0.00%	0.3