Original: At 100 C (373.65 K, 212 F) saturated sodium chloride brine is 39.12% salt by weight i.e. 39.12 g salt dissolves in 100mls of water at 100 C/O. At 0 C (273.15 K, 32 F) brine can only hold 35.70% salt.
Simplified: At 15.5 Celsius, a saturated solution of brine can hold 26.4% salt by weight.