Oxygen usage | Flow rate L·min−1 | |||||
1 | 2 | 3 | 4 | 5 | 6 | |
0.5 h per day | N/A | N/A | N/A | −€189 | −€221 | N/A |
0.75 h per day | N/A | N/A | N/A | −€249 | −€296 | N/A |
1.5 h per day | N/A | N/A | −€344 | −€440 | −€536 | N/A |
2.5 h per day | N/A | −€380 | −€541 | −€702 | −€863 | N/A |
4 h per day | N/A | −€580 | −€841 | −€1104 | −€1364 | N/A |
N/A: not applicable.