**"set his bomb".**The target was the Southern Freeway alongside Ingleside Police Station, stated in a previous article as 4.03 radians

**(4 radians}**and 4.84 inches

**(5 inches)**from Mount Diablo, indicating that the Zodiac Killer was rounding off his values and giving us an estimate.

**"estimate"**fits perfectly into the first eight characters of the code in compliance with

**"four radians and five inches",**thereby satisfying the three repeating ciphertext characters. The Zodiac Killer was informing us that the answer to the Mount Diablo code of

**"four radians and five inches"**was just an estimate to the location of the bomb at Ingleside Police Station (SFPD). The Merriam-Webster dictionary defines "estimate" as a rough or approximate calculation, which is exactly what the Zodiac Killer gave us. However, I undertook a more thorough measurement of Ingleside Police Station from Mount Diablo using the Zodiac Killer's slightly tilted crosshairs on the Phillips 66 map. The San Francisco Police Department is actually 251 degrees from the peak of Mount Diablo, making the calculations now 4.084 radians

**(4 radians}**and 4.84 inches

**(5 inches)**from the summit (see below).

**"anchor"**and

**"omega"**symbol, not used in the 408 and 340 ciphers. Attempting to correlate the letters used in the code to written text in both the Button letter (June 26th 1970) and Little List letter (July 26th 1970) also produces negative results. Therefore, it could be argued, that a code containing 29 unique characters must have an alternative meaning, in accompaniment to the code solution of

**"estimate:**

**four radians and five inches**".

The Zodiac Killer gave us an estimate of 4 radians, but the actual figure (shown above) was 4.084 radians. That is, 4.084 multiplied by one radian value (57.3 degrees) to equal 234 degrees. When we add in the magnetic north which Zodiac instructed us to do (17 degrees in 1970), we get 251 degrees and the location of Ingleside Police Station. Could the 32 character code contain the value of 234 degrees, which once set to magnetic north, now identified the exact location of Ingleside Police Station? If we resort to basic numerology where A=1, B=2, C=3 etc, and add up the values of the alphabetical characters in the Zodiac Killer's 32 character code, we arrive at a total of 234 (or 234 degrees). When set to magnetic north, it gives us the value of 251 degrees, which when subtended from the peak of Mount Diablo passes directly over Ingleside Police Station and the Southern Freeway.

**"The map (set to 17 degrees magnetic north) coupled with the code of 234 will tell you where the bomb is set".**