MISSING KLINE(BTCUSDT) SPOT DATA 1 SEC OF LAST 4 YEARS EXACT 15 RANGES..

```

FileName,Missing Start Time (UTC),Missing End Time (UTC),Start Timestamp,End Timestamp,Time Difference (ms),Time Difference (hh:mm:ss:SSSS)
1. BTCUSDT-1s-2020-02-09.csv,2020-02-09 02:00:00,2020-02-09 02:59:59,1581213600000,1581217199000,3600000,1:00:00
2. BTCUSDT-1s-2020-02-19.csv,2020-02-19 11:35:33,2020-02-19 17:29:59,1582112133000,1582133399000,21267000,5:54:27
3. BTCUSDT-1s-2020-03-04.csv,2020-03-04 09:21:47,2020-03-04 11:29:59,1583313707000,1583321399000,7693000,2:08:13
4. BTCUSDT-1s-2020-04-25.csv,2020-04-25 02:00:00,2020-04-25 04:29:59,1587780000000,1587788999000,9000000,2:30:00
5. BTCUSDT-1s-2020-06-28.csv,2020-06-28 02:00:00,2020-06-28 05:29:59,1593309600000,1593322199000,12600000,3:30:00
6. BTCUSDT-1s-2020-12-21.csv,2020-12-21 13:47:21,2020-12-21 17:59:59,1608558441000,1608573599000,15159000,4:12:39
7. BTCUSDT-1s-2020-12-25.csv,2020-12-25 02:00:00,2020-12-25 02:59:59,1608861600000,1608865199000,3600000,1:00:00
8. BTCUSDT-1s-2021-02-11.csv,2021-02-11 03:40:55,2021-02-11 04:59:59,1613014855000,1613019599000,4745000,1:19:05
9. BTCUSDT-1s-2021-03-06.csv,2021-03-06 02:00:00,2021-03-06 03:29:59,1614996000000,1615001399000,5400000,1:30:00
10. BTCUSDT-1s-2021-04-20.csv,2021-04-20 02:00:00,2021-04-20 04:29:59,1618884000000,1618892999000,9000000,2:30:00
11. BTCUSDT-1s-2021-04-25.csv,2021-04-25 04:00:59,2021-04-25 08:44:59,1619323259000,1619340299000,17041000,4:44:01
12. BTCUSDT-1s-2021-08-13.csv,2021-08-13 02:00:00,2021-08-13 06:29:59,1628820000000,1628836199000,16200000,4:30:00
13. BTCUSDT-1s-2021-09-29.csv,2021-09-29 07:00:00,2021-09-29 08:59:59,1632898800000,1632905999000,7200000,2:00:00
14. BTCUSDT-1s-2021-12-24.csv,2021-12-24 04:59:55,2021-12-24 05:00:35,1640321995000,1640322035000,41000,0:00:41
15. BTCUSDT-1s-2023-03-24.csv,2023-03-24 12:39:42,2023-03-24 13:59:59,1679661582000.0,1679666399000.0,4818000,1:20:18

Exact data with time ranges missing ... PLEASE FIX .....

```

Start by checking the 15 BTCUSDT-1s CSV ranges listed in the issue against the available spot-data files and their UTC timestamps. Verify each reported gap and determine whether the source data can be recovered. Done means the listed intervals are present and the resulting files no longer contain those missing ranges.

Written by the indexing model from the issue text.