Stats with tile plots - some of them don't work or work properly

[dkang2]

Describe the bug
With a tile plot (such as O3), when the stats selected, some of them don't work or produced unreasonable results. Such as "maximum_8hour_mean" even with the criteria > 0 is set.

To Reproduce
Steps to reproduce the behavior:
./verdi.sh -f /work/MOD3DEV/dkj/github_CMAQ/CMAQ_LTNG/GLMaWWLLN_LNOx3/data/output_CCTM_v55_intel23.2_2022_12US1_CRACMM3/CCTM_ACONC_v55_intel23.2_2022_12US1_CRACMM3_20220527.nc

1. Generate O3 tile plot:

2. Choose Stats: "maximum_8hour_mean" and threshold > 0 3.

Note: the Min and Max indicated Infinity and -Infinity, while the presented values are all 0s.

[dkang2]

For "timestep_of_maximum" and "timestep_of_minimum", the scales go from 0.000 to 1.000. The plots are supposed to show the hours when the maximum or minimum values occur and the values should be between 0-24 on the daily file.

[dkang2]

For the "range" stat, the User Manual says RAGNG: MAXIMUM - MINIMUM (Page 51), so the results should be values >= 0, but the plot shows negative numbers.

[yadongxuEPA]

Tested with VERDI_2.2_linux64_20250818.tar.gz on Atmos with another dataset "CCTM46_P16.base02a.36k.O3MAX_1", confirmed that this issue has not resolved.

[dkang2]

I tested the 0827 build, the issues have been resolved. To make more sense, the > 0.12 box is only valid for Hours_of_non_compliance and custom_percentile, it should be disabled if other STATS are selected. In addition I would like to change the value of "0.12" to "0.01", just a reminder for users to change a value. I guess the "0.12" was chosen because in the very early days O3 exceedance was set to 120 ppb (hourly maximum). Nowadays, it rarely exceeds this value.

The "sum" stat doesn't seem to make any changes from the tile plot and the variance, standard_deviation, coefficient_of_variance don't seem to work. Probably these STATS should be removed from the selections and they don't make much sense to me. Let's discuss it in our meetings.

[yadongxuEPA]

Tested with VERDI_2.2_linux64_20250827.tar.gz on Atmos, found that the majority of Stats worked, but the results for "Hours of Non Compliance" seems unreasonable (number of hours higher than 0.080ppm cannot be more than 24), shown as below:

[dkang2]

Tested with VERDI_2.2_linux64_20250827.tar.gz on Atmos, found that the majority of Stats worked, but the results for "Hours of Non Compliance" seems unreasonable (number of hours higher than 0.080ppm cannot be more than 24), shown as below:

I think that the number 34 somehow is a reflection of the layers (35). If only the first lay is selected, the value goes from 0 to 1.00 regardless the threshold values. While 2 layers are selected, it goes from 0 to 2. Anyway this STAT doesn't work as expected.

[dkang2]

The problem occurred when I clicked the "Use Layer Range" and put both Min and Max as 1, then the title plot doesn't pick the layer dimension, but seems to generate correctly the first layer tile plot. When I do STATs, it goes wrong. It is a bug. When I choose the Max other than 1, the STATs work well (sum, variance ...).