TLC plate: According to my data and calculations. What samples contain caffeine. Give a thorough analysis. Additionally, please check if my understanding of the Rf values is correct, i wasnt sure how to calculate upon seeing multiple spots.

Rf values calculated using Rf formula:

TLC#$1$ C $($caffeine$)$

$\frac{4\mathrm{.}7}{6\mathrm{.}7}=0\mathrm{.}7015$

$M($monster$)$

$\frac{4\mathrm{.}5}{6\mathrm{.}7}=0\mathrm{.}6716$

Co $($cola$)$

$\frac{4\mathrm{.}6}{6\mathrm{.}7}=0\mathrm{.}6866$

Bull$)$

$\frac{4\mathrm{.}7}{6\mathrm{.}7}=0\mathrm{.}7015$

$P($Power horse$)$

$\frac{4\mathrm{.}5}{6\mathrm{.}7}=0\mathrm{.}6716$

TLC#$2$ C $($caffeine$)$

$\frac{4\mathrm{.}9}{6\mathrm{.}75}=0\mathrm{.}7259$

B $($Panadol blue$)$

$\frac{4\mathrm{.}5}{6\mathrm{.}75}=0\mathrm{.}6667$

$R($Panadol red$)$

$\frac{4\mathrm{.}7}{6\mathrm{.}75}=0\mathrm{.}6963$