Table:
0
A
B
C
D
E
F
1
Call sign
Frequency MHz
City of license
ERP W
Class
FCC info
2
WCRG
90.7
Williamsport, Pennsylvania
3,000
A
FCC
3
WJRC
90.9
Lewistown, Pennsylvania
94
A
FCC
4
WZRG
91.9
Kulpmont, Pennsylvania
1450
A
FCC
5
W269BZ
101.7
State College, Pennsylvania
4
D
FCC
6
W296AP
107.1
Williamsport, Pennsylvania
5
D
FCC
7
W299AF
107.7
Catawissa, Pennsylvania
1
D
FCC

Questions and formulas:
Question: Tell me the sum of frequency for ERP W less than 1
Formula: SUM(FILTER(B1, D1<1))
Formula2: SUM(FILTER(B2:B7, D2:D7<1))
Level: easy