if (element_len != 2) return -1;
int decode_ambiguity(unsigned char *element, int element_len) {	// 0x14 Positional Ambiguity - 16 bits, in meters	int ambiguity;	if (element_len != 2) return -1;	ambiguity = get16(element);	lprintf(T_OPENTRAC, "Position +/- %d meters\r\n", ambiguity);	return 0;}