There are a couple of exceptions: for some reason a few competitions were held much later in the year in 1990 and 2005 and I didn't want to exclude them. Plus, I liked that by keeping the other months the seasons are automatically easily visually distinguishable.
Oh, I forgot to explain: the times are concentrated in thin, horizontally separated strands because the yearly athletics indoor season only lasts from January to March. If the competitions would be held throughout the year one would see a much more uniform cloud.
Dutch athletics has been growing by leaps and bounds over the last ten years or so. Two weeks ago another landmark was set by superstar Femke Bol, just before her 23rd birthday. At the humble Dutch national indoor championships Bol shattered the 41-year old 400m indoors world record, slingshotted by her close friend Lieke Klaver who herself improved her personal best and became the (at that moment) 15th fastest woman ever.
These two ladies just won gold and silver at the European indoor championships in Istanbul, and we made use of the occasion to plot Bol's record against the best performances of the last decades. The former record was set by Czech athlete Jarmila Kratochvílová in 1982.
KoempelLabs OP t1_jb24mg1 wrote
Reply to comment by anonkitty2 in [OC] Dutch athlete Femke Bol’s 400m indoor World Record in perspective by KoempelLabs
There are a couple of exceptions: for some reason a few competitions were held much later in the year in 1990 and 2005 and I didn't want to exclude them. Plus, I liked that by keeping the other months the seasons are automatically easily visually distinguishable.