chart_speed_times = LineChart2(speed_distance_temps , {
x: d => d.temps,
y: d => d.speed,
z: d => d['analyses.id'],
title: d => `${d['prenom']} ${d['nageurs.nom']} - ${d['competitions.nom']} ${d['rounds.libelle']}`,
xLabel : "Temps (s)",
yLabel: "↑ Vitesse (m/s)",
color: "steelblue"
})