add challenge data

data/challenge_03.png

data/challenge_05.png

data/sim1_095_hi.csv

data/sim1_095_lo.csv

data/sim1_096_hi.csv

data/sim1_096_lo.csv

data/sim1_100_hi.csv

data/sim1_100_lo.csv

data/sim1_101_hi.csv

data/sim1_101_lo.csv

data/sim2_095_hi.csv

data/sim2_095_lo.csv

data/sim2_096_hi.csv

data/sim2_096_lo.csv

data/sim2_100_hi.csv

data/sim2_100_lo.csv

data/sim2_101_hi.csv

data/sim2_101_lo.csv