BF-109 Series Climb Rate performance

BF-109F-1
Loaded Weight: 2800kg
Engine: DB-601N (1175PS)
5:50 - 6:00 to 6000m at 1.3ata (WEP)

BF-109F-4
Loaded Weight: 2890kg
Engine: DB-601E (1350PS)
5:30 - 5:40 to 6000m at 1.42ata (WEP)

BF-109G-2
Loaded Weight: 3100kg
Engine: DB-605A (1475PS)
5:32 to 6000m at 1.42ata (WEP)

BF-109G-6
Loaded Weight: 3175kg
Engine: DB-605AM (1800PS)
5:10 to 6000m at 1.7ata (WEP)

BF-109G-10
Loaded Weight: 3200kg
Engine: DB-605DB (1850PS)
4:50 to 6000m at 1.8ata (WEP)

BF-109K-4
Loaded Weight: 3375kg
Engine: DB-605DC (2000PS)
4:40 to 6000m at 1.98ata (WEP)

Average Climb rates to 6000m
BF-109F-1 = ~16.90m/s
BF-109F-4 = ~17.91m/s
BF-109G-2 = ~18.07m/s
BF-109G-6 = ~19.35m/s
BF-109G-10 = ~20.69m/s
BF-109K-4 = ~ 21.43m/s

Where’s the F2 and E4?

F-1 and F-2 is identical

And so what?