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Table C.1

Statistics from the comparison of the spiral-arm and inter-arm subsamples in Sect. 6.4.

Quantity Subsample Median Mean Standard A–D
error p-value
log10(MM) Arm 3.236 3.292 0.018 9.6%
Int 3.293 3.371 0.059

Scu 3.214 3.265 0.020 1.2%
Sag 3.332 3.377 0.043

log10(Req∕pc) Arm 0.212 0.206 0.010 >25.0%
Int 0.236 0.202 0.028

Scu 0.197 0.189 0.011 0.1%
Sag 0.270 0.262 0.022

log10(n(H2)∕cm−2) Arm 2.309 2.346 0.019 0.1%
Int 2.437 2.510 0.057

Scu 2.300 2.353 0.023 24.3%
Sag 2.310 2.327 0.034

σv/km s−1 Arm 1.297 1.379 0.030 <0.1%
Int 0.973 1.024 0.054

Scu 1.316 1.411 0.034 1.8%
Sag 1.256 1.277 0.067

log10(αvir) Arm 0.281 0.277 0.019 <0.1%
Int −0.089 −0.056 0.051

Scu 0.315 0.313 0.021 <0.1%
Sag 0.214 0.163 0.040

log10(PturbkB K cm−3) Arm 5.561 5.559 0.028 >25.0%
Int 5.539 5.473 0.078

Scu 5.592 5.591 0.032 5.1%
Sag 5.528 5.455 0.059

Tex/K Arm 11.858 12.273 0.154 <0.1%
Int 9.461 9.673 0.284

Scu 11.920 12.346 0.173 22.5%
Sag 11.659 12.040 0.365

Notes. The subsample names are listed in abbreviated form, and are designated as the spiral arm (“Arm”), inter-arm (“Int”), Scutum-Centaurus arm (“Scu”) and Sagittarius arm (“Sag”). We list the two-sample Anderson–Darling test p-values.

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