y = 3.335/(1 + e^(-(x-(-0.102))/1.078))
Inital zero points added:0
Inflexion point of curve:1998
acceleration counts pred pred_actual velocity y_norm year
0 -0.034 8 1.746 8.799 0.772 1.668 1998
1 -0.263 23 2.452 20.307 0.602 2.567 1999
2 -0.235 38 2.919 35.412 0.337 2.986 2000
3 -0.129 41 3.157 47.362 0.156 3.020 2001
4 -0.058 52 3.262 54.477 0.066 3.218 2002
5 -0.024 50 3.306 60.012 0.027 3.131 2003
6 -0.010 57 3.323 64.434 0.011 3.206 2004
7 -0.004 57 3.330 68.311 0.004 3.157 2005
8 -0.002 68 3.333 71.317 0.002 3.287 2006
9 -0.001 71 3.334 73.976 0.001 3.295 2007
10 -0.000 60 3.335 77.229 0.000 3.093 2008
11 -0.000 80 3.335 79.620 0.000 3.340 2009
12 -0.000 74 3.335 82.625 0.000 3.229 2010
13 -0.000 89 3.335 86.256 0.000 3.365 2011
14 -0.000 128 3.335 90.850 0.000 3.667 2012
15 -0.000 108 3.335 94.391 0.000 3.465 2013
16 -0.000 101 3.335 74.760 0.000 3.627 2014
17 -0.000 12 3.335 9.943 0.000 3.517 2015