  The scrape-off layer (SOL) power width (\lambda_q) is important for
predicting the heat load on divertor targets for future magnetically confined
devices. Currently, the underlying physics for \lambda_q scaling is not fully
understood. This paper extends the previous inboard SOL particle flux width
(\lambda_{js}) scaling [Liu et al 2019 Plasma Phys. Control. Fusion 61 045001]
to the outboard side in EAST, which can provide more experimental evidence for
\lambda_q study. A systematic method has been developed to correct the less
reliable upper outer (UO) divertor Langmuir probe (Div-LP) measurements with
their more reliable neighboring measurements to reduce the measurement
uncertainty of \lambda_js. For the discharges with the favorable Bt and upper
single null configurations in the 2019 experiment campaign, about 260
discharges have been selected by certain criteria to ensure good \lambda_js
measurements. Three H-mode, L-mode, and Ohmic databases have been constructed
and are used for \lambda_js scalings. It is found that the outboard \lambda_js
for the H-mode and L-mode plasmas scales as,
\lambda_(js,UO)=1.52(W_{MHD}/n_e)^(-0.61) P_{tot}^0.19, where W_{MHD} is the
stored energy, n_e is the line-averaged density, and P_{tot} is the total input
power. This scaling is similar to the inboard \lambda_js scaling except for the
scaling amplitude that is probably due the triangularity. The repeatable
scaling dependence on W_{MHD}/n_e confirms the reliability of this dependence
even though the regression quality is relatively poor. It is also discussed
that the solely scaling of \lambda_q/\lambda_{js} on Bp is not enough to
include all the physics of SOL heat transports.
