The approximated RC costs on steemd.com are wrong for 0.20.6

The RC costs which are currently shown on https://steemd.com are currently wrong.
image.png

Script to measure RC costs

I used the script to measure RC costs:

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#!/usr/bin/python
from beem import Steem
from beem.comment import Comment
from beem.account import Account
import time

wif_posting = "5xx"
wif_active = "5xx"

if __name__ == "__main__":

stm = Steem(node = "https://api.steemit.com", keys=[wif_posting, wif_active])
account = Account("beembot", steem_instance=stm)
rc_mana_old = account.get_rc_manabar()
print(account.steem)
# vote RC costs
# c = Comment("@holger80/which-influence-has-the-card-order-in-a-deck", steem_instance=stm)
# c.upvote(voter="beembot")
# transfer RC costs
#account.transfer("holger80", 0.001, "SBD", memo="Measure RC costs")
# comment RC costs
tags = ["test"]
stm.post("Test to measure RC costs", "This is a test to measure the RC costs for a post", author="beembot", parse_body=True, tags=tags)
time.sleep(5)
rc_mana_new = account.get_rc_manabar()
rc_costs = rc_mana_old["current_mana"] - rc_mana_new["current_mana"]
print("Costs: %f G RC" % (rc_costs / 1e9))

Measurement

The table shows the obtained results:
| type | RC costs |
| — | — |
| vote | 0.119031 G RC |
| transfer | 0.335866 G RC |
| comment | 1.464279 G RC |

It seems that the shown RC costs on https://steemd.com are divided by a factor of 2.
The measured RC costs for a vote is 0.11, whereas steemd showed 0.064. A transfer needs 0.33, whereas steemd shows 0.15. A short post costs 1.45 and steemd shows 0.9.