| MONTH | SiO2 | S | CL(-) | LOI | +45 µm | H2O | K2O | Na2O | pH | |
| Jan-02 | 94.6 | 0.11 | 0.09 | 2.5 | 5.1 | 0.7 | 0.79 | 0.14 | 8.1 | |
| Feb-02 | 95.0 | 0.10 | 0.06 | 2.0 | 5.2 | 0.7 | 0.64 | 0.10 | 7.7 | |
| Mar-02 | 94.8 | 0.11 | 0.08 | 2.2 | 4.8 | 0.7 | 0.65 | 0.10 | 6.9 | |
| Apr-02 | 94.4 | 0.11 | 0.08 | 2.2 | 5.1 | 0.8 | 0.74 | 0.09 | 7.9 | |
| May-02 | 94.5 | 0.11 | 0.07 | 2.3 | 4.2 | 0.7 | 0.76 | 0.08 | 7.5 | |
| Jun-02 | 94.7 | 0.11 | 0.06 | 2.3 | 4.1 | 0.7 | 0.76 | 0.09 | 8.0 | |
| Jul-02 | 94.9 | 0.09 | 0.06 | 2.4 | 4.0 | 0.7 | 0.66 | 0.08 | 7.3 | |
| Aug-02 | 95.1 | 0.08 | 0.07 | 2.3 | 3.3 | 0.8 | 0.58 | 0.09 | 7.4 | |
| Sep-02 | 95.1 | 0.08 | 0.04 | 1.9 | 3.2 | 0.7 | 0.60 | 0.07 | 7.9 | |
| Oct-02 | 94.8 | 0.08 | 0.05 | 1.9 | 3.4 | 0.6 | 0.72 | 0.07 | 8.8 | |
| Nov-02 | 95.4 | 0.09 | 0.08 | 1.9 | 3.7 | 0.7 | 0.67 | 0.09 | 7.8 | |
| Dec-02 | 94.8 | 0.11 | 0.11 | 2.2 | 3.8 | 0.7 | 0.77 | 0.11 | 7.2 | |
| AVG | 94.8 | 0.10 | 0.07 | 2.2 | 4.2 | 0.7 | 0.69 | 0.09 | 7.7 | |
| MIN | 94.4 | 0.08 | 0.04 | 1.9 | 3.2 | 0.6 | 0.58 | 0.07 | 6.9 | |
| MAX | 95.4 | 0.11 | 0.11 | 2.5 | 5.2 | 0.8 | 0.79 | 0.14 | 8.8 | |
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