Season | Â | Time point (hh:mm) | |||||
---|---|---|---|---|---|---|---|
 |  | 11:00 | 15:00 | 19:00 | 23:00 | 3:00 | 7:00 |
Winter | Mean (pg/ml) | 3.12 | 2.30 | 1.94 | 4.52 | 6.74 | 3.82 |
 | SD (pg/ml) | 4.59 | 2.51 | 1.47 | 2.95 | 5.15 | 1.91 |
Spring | Mean (pg/ml) | 2.20 | 2.06 | 1.66 | 3.89 | 5.44 | 2.30 |
 | SD (pg/ml) | 1.56 | 1.76 | 1.06 | 2.04 | 3.84 | 1.53 |
Summer | Mean (pg/ml) | 2.09 | 1.95 | 1.81 | 3.15 | 5.97 | 2.32 |
 | SD (pg/ml) | 1.74 | 1.31 | 1.62 | 2.05 | 3.68 | 1.53 |
Autumn | Mean (pg/ml) | 2.12 | 1.91 | 1.88 | 3.03 | 5.24 | 2.47 |
 | SD (pg/ml) | 1.54 | 1.51 | 1.64 | 1.68 | 3.83 | 1.21 |
Annual average | Mean (pg/ml) | 2.39 | 2.03 | 1.84 | 3.61 | 5.73 | 2.69 |
 | SD (pg/ml) | 1.47 | 1.38 | 1.50 | 3.34 | 5.08 | 2.58 |