| S. No | Age (year) | Na, T-II (mg/L) (±SD) | Age (year) | Na, T-III (mg/L) (±SD) | Age (year) | Na, T-IV (mg/L) (±SD) | Required range |
| 1 | 29 | 3085 ± 3.01 | 25 | 2812 ± 5.02 | 28 | 2600 ± 8.32 |
|
| 2 | 36 | 3066 ± 5.03 | 29 | 2934 ± 5.01 | 37 | 2744 ± 8.62 |
|
| 3 | 34 | 3012 ± 8.01 | 31 | 2865 ± 8.02 | 41 | 2754 ± 7.01 |
|
| 4 | 36 | 3080 ± 7.01 | 34 | 2894 ± 6.12 | 44 | 2786 ± 6.02 |
|
| 5 | 36 | 3088 ± 9.01 | 35 | 2844 ± 9.02 | 45 | 2680 ± 7.02 |
|
| 6 | 38 | 3020 ± 6.01 | 38 | 2890 ± 7.05 | 48 | 2654 ± 10.5 |
|
| 7 | 39 | 3055 ±10.0 | 40 | 2864 ± 5.02 | 51 | 2631 ± 9.02 | 3105 - 3335 mg/L |
| 8 | 39 | 2997 ± 9.03 | 41 | 2901 ± 5.01 | 53 | 2622 ± 8.02 |
|
| 9 | 41 | 2981 ± 9.02 | 44 | 2908 ± 6.01 | 54 | 2650 ± 9.02 |
|
| 10 | 41 | 2973 ± 5.01 | 45 | 2878 ± 5.02 | 60 | 2730 ± 10.2 |
|
| 11 | 44 | 3050 ± 8.01 | 48 | 2893 ± 8.01 | 64 | 2564 ± 9.02 |
|
| 12 | 47 | 3056 ± 10.0 | 53 | 2866 ± 6.02 | 65 | 2694 ± 8.01 |
|
| 13 | 52 | 2945 ± 6.01 | 56 | 2892 ± 5.01 | 69 | 2751 ± 9.01 |
|
| 14 | 56 | 2985 ± 10.0 | 56 | 2861 ± 5.02 | 70 | 2511 ± 8.03 |
|
| 15 | 61 | 3012 ± 9.03 | 65 | 2796 ± 5.05 | 73 | 2686 ± 8.02 |
|