DCTHZ premium only $0.15, not $0.60. DCTH = $1.60, DCTHZ = $0.97, DCTHZ strike = $0.78, so $1.60-$0.78=$0.82, then $.97-$.82=$0.15.....current premium = $0.15, not $0.60.
"Our houses are such unwieldy property that we are often imprisoned rather than housed in them." - Henry David Thoreau, Walden: Economy, 1854