Cycle 8 2021Proposal Submission Statistics
Joint ALMA Observatory
May 20, 2021

Number of submitted proposals and time requested
Time requested (hours)
Number12-m

7-mTotal PowerAll proposals

1735

26,325

14,846

13,802

ACA standalone

97-4023

2655

Large Programs

4043573163

3794

25-50 h proposals on 12-m Array

198

6758

2532

2299

VLBI

22264

--Phased array (pulsar)

8125--

Time requested on 12-m Array
All

Chile

East Asia

EuropeNorth
America

Other

Time requested (hours)

26,3251308

5445

11,0667668

838

Offered

4300

430

968

14511451

see note

Subscription

6.1

3.0

5.6

7.6

5.3

N/A

Note: All regions contribute observing time for proposals
from PIs who are not affiliated with any of the ALMA regions.

Time requested on 7-m and Total Power arrays
AllChile

East Asia

EuropeNorth
AmericaOther

14,846

862

4542

4447

4602

394

Total Power Array (hours) 13,802

420

4537

3918

4822

106

7-m Array (hours)Requested 12-m Array Time per Proposal**Excludes Large Programs

Requested 12-m Array Time by category**Excludes Large Programs

Percentage of all proposals by region* and category* Percentages by region correspond to the regional affiliation of the Principal Investigator (PI) and co-PIs.

Percentage of proposals requesting the 12-m Array by region, category, and band

• Percentages based on 1638 proposals requesting the 12-m Array.
• The percentages by receiver band sum to greater than 100% since some proposals request more than one receiver band.

Percentage of requested time on 12-m Array by region, category, and bandPercentage of proposals requesting the 7-m Array by region, category, and band

• Percentages based on 354 proposals requesting the 7-m Array.
• The percentages by receiver band sum to greater than 100% since some proposals request more than one band.

Percentage of requested time on 7-m Array by region, category, and bandPercentage of proposals requesting the Total Power Array by region, category, and band

• Percentages based on 142 proposals requesting the Total Power Array.
• The percentages by receiver band sum to greater than 100% since some proposals request more than one receiver band.

Percentage of requested time on Total Power Array by region, category, and bandPercentage of Large Programs by region* and category* Percentages by region correspond to the regional affiliation of the Principal Investigator (PI) and co-PIs.

Percentage of requested time on 12-m Array for Large Programs

Requested Time on 7-m Array for Large Programs

Requested Time on Total Power Array for Large Programs

Number of submitted proposals by Cycle

Number of proposals

2000
1500
1000
500
001234Cycle

5678

Number of submitted Large Programs by Cycle
Number of Large Programs

50403020100Cycle 4Cycle 5Cycle 6Cycle 7Cycle 8

Time requested by Cycle

Time requested (hours)

30,00012-m Array
7-m Array
Total Power Array

25,00020,00015,00010,0005,000
001234Cycle

5678

Distribution of time requests on 12-m Array by Cycle• Each box plot shows:- median (horizontal line)- 25-75% distribution (box)- 5-95% distribution (whiskers)• Large Programs and standalone ACA
proposals are excluded.

Oversubscription rate by cycle: 12-m Array
EuropeEast Asia
North AmericaChile

753101234Cycleti

Oversubscrip on rate

95678

Number of new Principal Investigators
500

Number400
300
200
100
0

12345Cycle

678