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): 5 - Median hero bans (mb): 1 - Matches: 40

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

Balance rank	Winrate	Pickrate	Contest Rate
56.2	79.4	34.8	29.5

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Bounty Hunter	34	85.00%	100.00	52.44	8	75.00%	1.6	26	69.23%	26.0
Ancient Apparition	7	17.50%	98.78	12.20	6	100.00%	1.2	1	100.00%	1.0
Medusa	20	50.00%	97.56	26.83	4	100.00%	0.8	16	68.75%	16.0
Beastmaster	34	85.00%	96.34	60.98	19	73.68%	3.8	15	53.33%	15.0
Terrorblade	35	87.50%	95.12	75.61	9	55.56%	1.8	26	65.38%	26.0
Sand King	23	57.50%	93.90	62.20	17	58.82%	3.4	6	83.33%	6.0
Disruptor	32	80.00%	92.68	84.15	18	50.00%	3.6	14	71.43%	14.0
Elder Titan	21	52.50%	91.46	56.10	9	55.56%	1.8	12	75.00%	12.0
Omniknight	34	85.00%	90.24	87.80	8	37.50%	1.6	26	61.54%	26.0
Tiny	40	100.00%	89.02	93.90	5	40.00%	1.0	35	51.43%	35.0
Io	25	62.50%	87.80	74.39	10	70.00%	2.0	15	40.00%	15.0
Visage	12	30.00%	86.59	35.37	4	75.00%	0.8	8	62.50%	8.0
Death Prophet	32	80.00%	85.37	92.68	15	53.33%	3.0	17	35.29%	17.0
Batrider	21	52.50%	84.15	76.83	2	0.00%	0.4	19	63.16%	19.0
Razor	23	57.50%	82.93	85.37	10	50.00%	2.0	13	46.15%	13.0
Lycan	34	85.00%	81.71	95.12	13	46.15%	2.6	21	38.10%	21.0
Naga Siren	25	62.50%	80.49	89.02	8	37.50%	1.6	17	52.94%	17.0
Underlord	8	20.00%	79.27	39.02	8	62.50%	1.6	0	0.00%	0.0
Tinker	21	52.50%	78.05	86.59	5	40.00%	1.0	16	50.00%	16.0
Rubick	33	82.50%	76.83	98.78	17	47.06%	3.4	16	18.75%	16.0
Monkey King	8	20.00%	75.61	37.80	5	80.00%	1.0	3	0.00%	3.0
Pugna	15	37.50%	74.39	78.05	8	50.00%	1.6	7	42.86%	7.0
Phantom Lancer	17	42.50%	73.17	81.71	5	20.00%	1.0	12	66.67%	12.0
Puck	21	52.50%	71.95	91.46	10	50.00%	2.0	11	27.27%	11.0
Troll Warlord	4	10.00%	70.73	15.85	4	75.00%	0.8	0	0.00%	0.0
Outworld Destroyer	17	42.50%	69.51	82.93	5	40.00%	1.0	12	50.00%	12.0
Sniper	8	20.00%	68.29	42.68	6	50.00%	1.2	2	100.00%	2.0
Tidehunter	14	35.00%	67.07	73.17	5	40.00%	1.0	9	55.56%	9.0
Shadow Fiend	13	32.50%	65.85	71.95	8	50.00%	1.6	5	40.00%	5.0
Doom	2	5.00%	64.63	1.22	2	100.00%	0.4	0	0.00%	0.0
Nyx Assassin	5	12.50%	63.41	18.29	2	100.00%	0.4	3	33.33%	3.0
Weaver	7	17.50%	62.20	34.15	3	66.67%	0.6	4	50.00%	4.0
Gyrocopter	25	62.50%	60.98	97.56	13	38.46%	2.6	12	25.00%	12.0
Witch Doctor	7	17.50%	59.76	46.34	6	50.00%	1.2	1	100.00%	1.0
Enchantress	18	45.00%	58.54	90.24	5	60.00%	1.0	13	23.08%	13.0
Lifestealer	6	15.00%	57.32	40.24	5	60.00%	1.0	1	0.00%	1.0
Bane	8	20.00%	56.10	58.54	7	42.86%	1.4	1	100.00%	1.0
Brewmaster	12	30.00%	54.88	79.27	5	40.00%	1.0	7	42.86%	7.0
Queen of Pain	6	15.00%	53.66	36.59	3	66.67%	0.6	3	33.33%	3.0
Faceless Void	7	17.50%	52.44	48.78	5	60.00%	1.0	2	0.00%	2.0
Dragon Knight	9	22.50%	51.22	59.76	4	50.00%	0.8	5	40.00%	5.0
Lion	3	7.50%	50.00	17.07	3	66.67%	0.6	0	0.00%	0.0
Templar Assassin	5	12.50%	48.78	25.61	2	50.00%	0.4	3	66.67%	3.0
Night Stalker	3	7.50%	47.56	13.41	1	100.00%	0.2	2	50.00%	2.0
Clockwerk	7	17.50%	46.34	53.66	4	50.00%	0.8	3	33.33%	3.0
Sven	8	20.00%	45.12	63.41	4	25.00%	0.8	4	75.00%	4.0
Vengeful Spirit	1	2.50%	43.90	7.32	1	100.00%	0.2	0	0.00%	0.0
Shadow Shaman	1	2.50%	43.90	7.32	1	100.00%	0.2	0	0.00%	0.0
Centaur Warrunner	1	2.50%	43.90	7.32	1	100.00%	0.2	0	0.00%	0.0
Silencer	1	2.50%	43.90	7.32	1	100.00%	0.2	0	0.00%	0.0
Skywrath Mage	1	2.50%	43.90	7.32	1	100.00%	0.2	0	0.00%	0.0
Jakiro	5	12.50%	37.80	54.88	5	40.00%	1.0	0	0.00%	0.0
Tusk	23	57.50%	36.59	100.00	13	15.38%	2.6	10	30.00%	10.0
Keeper of the Light	6	15.00%	35.37	69.51	5	40.00%	1.0	1	0.00%	1.0
Viper	5	12.50%	34.15	51.22	3	33.33%	0.6	2	50.00%	2.0
Leshrac	2	5.00%	32.93	24.39	2	50.00%	0.4	0	0.00%	0.0
Clinkz	2	5.00%	32.93	24.39	2	50.00%	0.4	0	0.00%	0.0
Timbersaw	2	5.00%	32.93	24.39	2	50.00%	0.4	0	0.00%	0.0
Warlock	2	5.00%	32.93	24.39	2	50.00%	0.4	0	0.00%	0.0
Venomancer	1	2.50%	28.05	10.98	0	0.00%	0.0	1	100.00%	1.0
Storm Spirit	1	2.50%	28.05	10.98	0	0.00%	0.0	1	100.00%	1.0
Morphling	1	2.50%	28.05	10.98	0	0.00%	0.0	1	100.00%	1.0
Nature's Prophet	4	10.00%	24.39	47.56	2	50.00%	0.4	2	0.00%	2.0
Earth Spirit	10	25.00%	23.17	96.34	7	14.29%	1.4	3	33.33%	3.0
Winter Wyvern	3	7.50%	21.95	45.12	3	33.33%	0.6	0	0.00%	0.0
Luna	3	7.50%	21.95	45.12	3	33.33%	0.6	0	0.00%	0.0
Enigma	4	10.00%	19.51	57.32	3	33.33%	0.6	1	0.00%	1.0
Chen	5	12.50%	18.29	70.73	3	33.33%	0.6	2	0.00%	2.0
Lone Druid	2	5.00%	17.07	14.63	0	0.00%	0.0	2	50.00%	2.0
Broodmother	3	7.50%	15.85	41.46	1	0.00%	0.2	2	50.00%	2.0
Juggernaut	6	15.00%	14.63	80.49	0	0.00%	0.0	6	16.67%	6.0
Earthshaker	1	2.50%	13.41	32.93	1	0.00%	0.2	0	0.00%	0.0
Slardar	1	2.50%	13.41	32.93	1	0.00%	0.2	0	0.00%	0.0
Phantom Assassin	2	5.00%	10.98	68.29	2	0.00%	0.4	0	0.00%	0.0
Dazzle	1	2.50%	9.76	32.93	1	0.00%	0.2	0	0.00%	0.0
Huskar	1	2.50%	9.76	32.93	1	0.00%	0.2	0	0.00%	0.0
Treant Protector	1	2.50%	9.76	32.93	1	0.00%	0.2	0	0.00%	0.0
Mirana	2	5.00%	6.10	68.29	2	0.00%	0.4	0	0.00%	0.0
Legion Commander	2	5.00%	6.10	68.29	2	0.00%	0.4	0	0.00%	0.0
Chaos Knight	2	5.00%	3.66	50.00	1	0.00%	0.2	1	0.00%	1.0
Undying	2	5.00%	2.44	68.29	2	0.00%	0.4	0	0.00%	0.0
Abaddon	1	2.50%	1.22	24.39	0	0.00%	0.0	1	0.00%	1.0