| | PH | PH | | PH | PH | 2. 8 ～ 4.4 4.2 ～ 5.6 | 5.4 ～ 7.0 PH 4.0 | PH 4.1 ～ 4.3 | PH 4.4 ～ 5.0 | PH 5.0 PH 4. | 4 | | | | | | | | | | | | | | | |