Table 3.

REM500 measurements of initial spot scanning plans.

Field	Energy (MeV)	Range (cm)	SOBP (cm)	Gantry Angle	Couch Angle	Plan	REM500 ($\mu \text{Sv}$)	Statistical Error
RPO	1144.9‐72.5	14.8	13.3	260	0	Plan 1	1.5	13%
LAO	146.9‐76.1	14.7	12.78	50	0	Plan 1	1.8	13%
LPO	1138.1‐72.5	13.9	12.84	105	0	Plan 1	0.8	17%
RPO	1148.8‐74.3	15.8	12.34	255	0	Plan 2	1.9	10%
RAO	1139.8‐72.5	14.6	13.12	300	0	Plan 2	1.1	15%
Vertex	1178.6‐119.6	21.3	12.09	290	90	Plan 2	41.1	2%

$\text{SOBP}=\text{spread}‐\text{out Bragg peak}$.