Oxygen
Season
Winter
Summer
All year
horizon (m)
horizon (m)
horizon (m)
0
0
500
5
5
750
10
10
1000
25
25
1500
50
50
2000
75
75
2500
100
100
3000
150
150
3500
200
200
4000
250
250
4500
300
300
400
400