{"collection":"grad-noise-175k","coord":"t20_x51_u0_b139","data":{"index":169906,"ordinal":"164472610","topo":"o2(x,o2(o2(x,x),x))","expression":"sub(D,sub(eql(R,R),P))","image":"frame_expr-169906.png","measured":true,"step":67655,"globalStep":67655,"value_mean":-0.125,"value_positive_fraction":0.4375,"value_abs_mean":0.9375,"value_variance":0.9009127616882324,"value_stddev":0.9491642117500305,"value_min":-1,"value_max":1,"value_range":2,"histogram_probability_sum":1,"histogram_entropy_bits":1.9662505388259888,"gradient_energy_x":0.00048828125,"gradient_energy_y":0,"gradient_magnitude_mean":0.007936508394777775,"gradient_axis_bias":1,"gradient_nonzero_flag":1,"laplacian_mean":0,"laplacian_energy":0.00001550099295855034,"laplacian_abs_mean":0.0004960317746736109,"gradient_magnitude_variance":0.00042527588084340096,"gradient_magnitude_stddev":0.020622218027710915,"gradient_magnitude_cv":2.5983994007110596,"gradient_magnitude_max":0.0625,"gradient_energy_over_variance":0.000541985034942627,"laplacian_energy_over_variance":0.000017205875337822363,"variance_normalization_valid_flag":1,"gradient_cv_valid_flag":1,"scale_diff2_near":0.0012849506456404924,"scale_diff2_mid":0.01928453892469406,"scale_diff2_far":0.22450658679008484,"scale_diff2_near_over_variance":0.001426276401616633,"scale_diff2_mid_over_variance":0.021405555307865143,"scale_diff2_far_over_variance":0.2491990178823471,"value_histogram":[[[0.50390625,0.50390625,0.50390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.00390625,0.00390625,0.00390625],[0.37890625,0.37890625,0.37890625]]],"scale_curve":[[[0.015625,0.0012849506456404924,0.001426276401616633],[0.0625,0.01928453892469406,0.021405555307865143],[0.25,0.22450658679008484,0.2491990178823471]]]},"renderer":1,"first_seen":"2026-09-23T00:00:00.000Z","last_seen":"2026-09-23T00:00:00.000Z","sightings":[{"at":"2026-09-23T00:00:00.000Z","data":null}],"axes":"[\"20\",\"51\",\"0\",\"139\"]"}