Amplitude of the best fitting models per metabolite with significance levels (in bold: Bonferroni-corrected significant results).

<p>T-statistic of the amplitudes, tmax (month during which levels peak), tmin (month during which levels are at their lowest), and best-fitting model based on deviance calculations. Feb = February; Nov = November; Sept = September; Dec = December.</p

Median concentrations of monoamine metabolites (in nmol/L) in cerebrospinal fluid with standard deviations (S.D.), per season (italics indicate totals).

<p>Median concentrations of monoamine metabolites (in nmol/L) in cerebrospinal fluid with standard deviations (S.D.), per season (italics indicate totals).</p

Median CSF 5-HAA Concentrations (in nmol/L) are plotted against Month of Birth.

<p>Bold line represents cosine, thin line represents LOESS and dashed lines represent 95% CIs of the cosine. Whiskers indicate 95% CIs of 5-HIAA concentrations.</p

Median CSF 5-HAA Concentrations (in nmol/L) are plotted against Month of CSF Sampling.

<p>Bold line represents cosine, thin line represents LOESS and dashed lines represent 95% CIs of the cosine. Whiskers indicate 95% CIs of 5-HIAA concentrations.</p