Time series of percentage anomaly in monthly values of HCl from 2004-2020 from MLS observations and model runs CNTL and ODS95 averaged from 63N-90N equivalent latitude at 480 K (approx. 18 km). # time OMI CNTL ODS95 2.004042e+03, nan, 9.194625e+01, 1.036233e+02 2.004125e+03, nan, 9.682479e+01, 1.114033e+02 2.004208e+03, nan, 3.490131e+01, 4.693061e+01 2.004292e+03, nan, -8.655045e-01, 9.314405e+00 2.004375e+03, nan, -8.228767e+00, -1.053689e+00 2.004458e+03, nan, -1.121622e+01, -5.058736e+00 2.004542e+03, nan, -1.158097e+01, -5.570340e+00 2.004625e+03, -3.388967e-01, -9.965646e+00, -4.270013e+00 2.004708e+03, -3.989344e+00, -8.449963e+00, -2.839336e+00 2.004792e+03, -4.029827e+00, -6.539066e+00, -1.064738e+00 2.004875e+03, 3.550355e+00, -8.937015e-01, 4.639768e+00 2.004958e+03, 1.590041e+01, 1.294972e+01, 1.827708e+01 2.005042e+03, -2.186149e+00, 6.117898e+00, 1.077148e+01 2.005125e+03, -7.050600e+01, -6.186797e+01, -6.008868e+01 2.005208e+03, -2.834425e+01, -2.385690e+01, -1.911930e+01 2.005292e+03, -8.480465e+00, -1.031347e+01, -3.137496e+00 2.005375e+03, -1.034344e+01, -8.650542e+00, -3.074783e+00 2.005458e+03, 5.808364e-01, -3.270353e+00, 2.190088e+00 2.005542e+03, -1.587127e+00, -1.701288e+00, 3.840434e+00 2.005625e+03, 2.196642e+00, -2.351119e-01, 5.014551e+00 2.005708e+03, 2.971233e+00, -1.023242e+00, 4.019705e+00 2.005792e+03, 2.778798e+00, -4.734823e-01, 4.333450e+00 2.005875e+03, 3.628654e+00, -2.467682e-01, 4.183515e+00 2.005958e+03, 1.399145e+01, 4.244468e+00, 8.114347e+00 2.006042e+03, 2.019101e+01, -2.074462e+01, -1.944482e+01 2.006125e+03, 6.330782e+01, 4.158508e+01, 4.614528e+01 2.006208e+03, 2.669485e+01, 1.916646e+01, 2.587511e+01 2.006292e+03, -9.068331e+00, -9.520698e+00, -3.292258e+00 2.006375e+03, -5.274893e+00, -1.071623e+01, -6.342637e+00 2.006458e+03, 1.816252e+00, -8.837004e+00, -4.787987e+00 2.006542e+03, -3.741519e+00, -9.599608e+00, -5.712449e+00 2.006625e+03, -4.841412e+00, -1.059816e+01, -7.207477e+00 2.006708e+03, -5.097504e+00, -1.031110e+01, -7.130633e+00 2.006792e+03, -1.090175e+01, -1.050764e+01, -7.679953e+00 2.006875e+03, -9.498130e+00, -6.897432e+00, -4.308757e+00 2.006958e+03, -4.412380e-01, 4.255427e+00, 6.787114e+00 2.007042e+03, 1.707664e+01, 2.761093e+01, 3.026879e+01 2.007125e+03, -2.528725e+01, -2.058514e+01, -1.860595e+01 2.007208e+03, -1.785461e+01, -2.572941e+01, -2.289764e+01 2.007292e+03, -8.569009e-01, -7.048688e+00, -2.585261e+00 2.007375e+03, 1.320267e+01, 3.917999e+00, 7.719598e+00 2.007458e+03, 6.014938e+00, 2.890153e+00, 6.605158e+00 2.007542e+03, -1.437436e+00, -6.505722e-01, 2.798129e+00 2.007625e+03, 2.079167e+00, -9.688830e-01, 2.099065e+00 2.007708e+03, -2.769207e+00, 6.613199e-02, 3.179691e+00 2.007792e+03, -7.177576e-01, 8.306661e-01, 3.890737e+00 2.007875e+03, -3.732876e+00, -2.192106e+00, 3.383133e-01 2.007958e+03, -3.553921e+00, -4.132525e+00, -2.105254e+00 2.008042e+03, -2.646030e+01, -3.208410e+01, -3.197243e+01 2.008125e+03, -5.279492e+01, -5.004111e+01, -4.981780e+01 2.008208e+03, -5.623825e+00, -7.496057e+00, -5.604760e+00 2.008292e+03, -5.438476e+00, -6.955331e+00, -3.083937e+00 2.008375e+03, -5.142876e+00, -5.394008e+00, -2.895735e+00 2.008458e+03, -2.569333e+00, -3.113337e+00, -7.189261e-01 2.008542e+03, 3.948430e+00, -1.984559e+00, 4.732318e-01 2.008625e+03, 2.032445e+00, -1.421952e+00, 6.573984e-01 2.008708e+03, -4.077370e+00, -5.145158e+00, -3.338619e+00 2.008792e+03, -4.894904e+00, -5.757044e+00, -4.218920e+00 2.008875e+03, -4.384169e+00, -3.156788e+00, -1.727943e+00 2.008958e+03, 6.202706e+00, 3.111608e+00, 4.796174e+00 2.009042e+03, 3.238513e+00, -1.360228e+01, -1.306354e+01 2.009125e+03, 4.806554e+01, 4.370139e+01, 4.532964e+01 2.009208e+03, 1.629328e+01, 2.121898e+01, 2.437674e+01 2.009292e+03, -9.635579e+00, -8.059882e+00, -4.293140e+00 2.009375e+03, -6.976769e+00, -6.823463e+00, -4.774719e+00 2.009458e+03, -9.545058e-01, -1.589370e+00, 2.183816e-01 2.009542e+03, -4.893937e+00, -2.201503e+00, -4.317371e-01 2.009625e+03, 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2.011125e+03, -4.923134e+01, -5.403071e+01, -5.455126e+01 2.011208e+03, -4.587413e+01, -4.535828e+01, -4.800377e+01 2.011292e+03, 3.015552e+01, 1.332358e+01, 4.603909e+00 2.011375e+03, 8.994352e+00, 9.553555e+00, 8.728694e+00 2.011458e+03, -8.828771e+00, 5.776278e+00, 6.260539e+00 2.011542e+03, -2.073760e-01, 6.100381e+00, 6.707866e+00 2.011625e+03, 1.768948e+00, 3.143441e+00, 3.456284e+00 2.011708e+03, 4.307395e+00, 3.168917e+00, 3.590696e+00 2.011792e+03, 1.288310e+01, 6.436296e+00, 7.159736e+00 2.011875e+03, 1.144263e+01, 5.586378e+00, 6.556274e+00 2.011958e+03, -1.366739e+01, -1.010007e+01, -9.596839e+00 2.012042e+03, -3.561578e+01, -2.256011e+01, -2.425763e+01 2.012125e+03, 3.167275e+01, 2.653478e+01, 2.603135e+01 2.012208e+03, 2.152199e+01, 1.751399e+01, 2.026031e+01 2.012292e+03, -7.351264e+00, -6.027533e+00, -3.362460e+00 2.012375e+03, -3.647800e+00, -3.094873e+00, -2.643150e+00 2.012458e+03, 1.812070e+00, 1.406281e+00, 1.525666e+00 2.012542e+03, 6.025951e+00, 1.382438e+00, 1.468387e+00 2.012625e+03, 3.563361e+00, 1.316954e+00, 1.039069e+00 2.012708e+03, 6.540357e+00, 4.251623e+00, 4.043839e+00 2.012792e+03, 5.988715e+00, 5.579550e+00, 5.381953e+00 2.012875e+03, 3.891858e+00, 3.470681e+00, 3.365641e+00 2.012958e+03, -2.298400e+01, -3.053306e+01, -3.130251e+01 2.013042e+03, 2.419423e+00, -1.422193e+01, -1.823554e+01 2.013125e+03, 7.228933e+01, 5.722483e+01, 5.456226e+01 2.013208e+03, 2.278912e+01, 2.063360e+01, 2.087882e+01 2.013292e+03, -1.014431e+01, -8.477529e+00, -7.173661e+00 2.013375e+03, -6.543197e+00, -8.677688e+00, -9.278761e+00 2.013458e+03, -9.053530e+00, -8.507799e+00, -9.725684e+00 2.013542e+03, -6.957302e+00, -8.134275e+00, -9.450833e+00 2.013625e+03, -4.406860e+00, -5.638917e+00, -7.288887e+00 2.013708e+03, -3.721964e+00, -3.802372e+00, -5.457571e+00 2.013792e+03, -1.955739e+00, -1.032423e+00, -2.627968e+00 2.013875e+03, 5.080021e-01, -2.791350e-01, -1.784019e+00 2.013958e+03, 1.241790e+01, 7.258649e+00, 6.229377e+00 2.014042e+03, 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