diff --git a/data/co2_mm_mlo.csv b/data/co2_mm_mlo.csv
index 0fb4ff3..afdc4b7 100644
--- a/data/co2_mm_mlo.csv
+++ b/data/co2_mm_mlo.csv
@@ -19,7 +19,7 @@
#
# Contact: Xin Lan (xin.lan@noaa.gov)
#
-# File Creation: Mon Feb 6 16:23:38 2023
+# File Creation: Sun Mar 5 03:55:27 2023
#
# RECIPROCITY
#
@@ -264,11 +264,11 @@ year,month,decimal date,average,deseasonalized,ndays,sdev,unc
1975,5,1975.3750,333.95,330.98,28,0.35,0.13
1975,6,1975.4583,333.42,331.01,27,0.48,0.18
1975,7,1975.5417,331.97,331.12,24,0.45,0.18
-1975,8,1975.6250,329.95,331.33,24,0.47,0.18
+1975,8,1975.6250,329.95,331.34,24,0.47,0.18
1975,9,1975.7083,328.50,331.60,22,0.53,0.22
1975,10,1975.7917,328.36,331.62,11,0.21,0.12
1975,11,1975.8750,329.38,331.57,18,0.31,0.14
-1975,12,1975.9583,330.78,331.75,-1,-9.99,0.00
+1975,12,1975.9583,330.79,331.75,-1,-9.99,0.00
1976,1,1976.0417,331.56,331.67,19,0.23,0.10
1976,2,1976.1250,332.74,332.14,22,0.49,0.20
1976,3,1976.2083,333.36,331.78,18,0.52,0.23
@@ -343,7 +343,7 @@ year,month,decimal date,average,deseasonalized,ndays,sdev,unc
1981,12,1981.9583,339.91,340.85,20,0.28,0.12
1982,1,1982.0417,340.93,341.09,28,0.30,0.11
1982,2,1982.1250,341.76,341.16,24,0.49,0.19
-1982,3,1982.2083,342.77,341.17,17,0.41,0.19
+1982,3,1982.2083,342.77,341.18,17,0.41,0.19
1982,4,1982.2917,343.96,341.32,7,0.42,0.31
1982,5,1982.3750,344.77,341.67,27,0.37,0.14
1982,6,1982.4583,343.88,341.43,27,0.37,0.14
@@ -504,7 +504,7 @@ year,month,decimal date,average,deseasonalized,ndays,sdev,unc
1995,5,1995.3750,363.83,360.72,29,0.66,0.24
1995,6,1995.4583,363.33,360.98,27,0.37,0.14
1995,7,1995.5417,361.78,361.10,28,0.36,0.13
-1995,8,1995.6250,359.33,360.93,24,0.70,0.28
+1995,8,1995.6250,359.33,360.93,24,0.70,0.27
1995,9,1995.7083,358.32,361.71,24,0.68,0.26
1995,10,1995.7917,358.14,361.52,29,0.26,0.09
1995,11,1995.8750,359.61,361.75,26,0.24,0.09
@@ -797,40 +797,41 @@ year,month,decimal date,average,deseasonalized,ndays,sdev,unc
2019,10,2019.7917,408.75,412.10,29,0.31,0.11
2019,11,2019.8750,410.48,412.52,26,0.40,0.15
2019,12,2019.9583,411.98,412.74,31,0.40,0.14
-2020,1,2020.0417,413.61,413.29,29,0.73,0.26
-2020,2,2020.1250,414.34,413.39,28,0.69,0.25
-2020,3,2020.2083,414.74,413.24,26,0.33,0.12
-2020,4,2020.2917,416.45,413.77,28,0.66,0.24
+2020,1,2020.0417,413.61,413.28,29,0.73,0.26
+2020,2,2020.1250,414.34,413.42,28,0.69,0.25
+2020,3,2020.2083,414.74,413.25,26,0.33,0.12
+2020,4,2020.2917,416.45,413.76,28,0.66,0.24
2020,5,2020.3750,417.31,413.91,27,0.61,0.23
2020,6,2020.4583,416.60,414.21,27,0.44,0.16
2020,7,2020.5417,414.62,414.30,30,0.55,0.19
2020,8,2020.6250,412.78,414.73,25,0.25,0.10
-2020,9,2020.7083,411.52,415.06,29,0.31,0.11
+2020,9,2020.7083,411.52,415.05,29,0.31,0.11
2020,10,2020.7917,411.51,414.86,30,0.22,0.08
-2020,11,2020.8750,413.12,415.11,27,0.81,0.30
-2020,12,2020.9583,414.26,414.96,30,0.47,0.17
+2020,11,2020.8750,413.12,415.12,27,0.81,0.30
+2020,12,2020.9583,414.26,414.95,30,0.47,0.17
2021,1,2021.0417,415.52,415.19,29,0.44,0.16
-2021,2,2021.1250,416.75,415.80,28,1.02,0.37
-2021,3,2021.2083,417.64,416.14,28,0.86,0.31
-2021,4,2021.2917,419.05,416.37,24,1.12,0.44
-2021,5,2021.3750,419.13,415.72,28,0.90,0.33
-2021,6,2021.4583,418.94,416.56,28,0.65,0.23
-2021,7,2021.5417,416.96,416.65,30,0.71,0.25
+2021,2,2021.1250,416.75,415.83,28,1.02,0.37
+2021,3,2021.2083,417.64,416.16,28,0.86,0.31
+2021,4,2021.2917,419.05,416.36,24,1.12,0.44
+2021,5,2021.3750,419.13,415.73,28,0.90,0.33
+2021,6,2021.4583,418.94,416.55,28,0.65,0.23
+2021,7,2021.5417,416.96,416.64,30,0.71,0.25
2021,8,2021.6250,414.47,416.43,26,0.72,0.27
-2021,9,2021.7083,413.30,416.84,27,0.29,0.11
+2021,9,2021.7083,413.30,416.83,27,0.29,0.11
2021,10,2021.7917,413.93,417.28,29,0.35,0.12
2021,11,2021.8750,415.01,417.00,30,0.36,0.13
-2021,12,2021.9583,416.71,417.42,28,0.48,0.17
+2021,12,2021.9583,416.71,417.40,28,0.48,0.17
2022,1,2022.0417,418.19,417.86,29,0.73,0.26
-2022,2,2022.1250,419.28,418.32,27,0.92,0.34
-2022,3,2022.2083,418.81,417.31,30,0.78,0.27
-2022,4,2022.2917,420.23,417.55,28,0.85,0.31
+2022,2,2022.1250,419.28,418.36,27,0.92,0.34
+2022,3,2022.2083,418.81,417.32,30,0.78,0.27
+2022,4,2022.2917,420.23,417.54,28,0.85,0.31
2022,5,2022.3750,420.99,417.59,30,0.76,0.27
2022,6,2022.4583,420.99,418.60,28,0.30,0.11
-2022,7,2022.5417,418.90,418.59,27,0.57,0.21
+2022,7,2022.5417,418.90,418.58,27,0.57,0.21
2022,8,2022.6250,417.19,419.15,27,0.37,0.14
2022,9,2022.7083,415.95,419.49,28,0.41,0.15
2022,10,2022.7917,415.78,419.13,30,0.27,0.10
2022,11,2022.8750,417.51,419.51,25,0.52,0.20
-2022,12,2022.9583,418.95,419.66,24,0.50,0.20
-2023,1,2023.0417,419.47,419.15,31,0.40,0.14
+2022,12,2022.9583,418.95,419.64,24,0.50,0.20
+2023,1,2023.0417,419.47,419.14,31,0.40,0.14
+2023,2,2023.1250,420.41,419.49,25,0.64,0.25
diff --git a/data/solutions/rf_mod_gridsearch.rds b/data/solutions/rf_mod_gridsearch.rds
index 34d95cc..f04d6e9 100644
Binary files a/data/solutions/rf_mod_gridsearch.rds and b/data/solutions/rf_mod_gridsearch.rds differ
diff --git a/data/tutorials/rf_mod.rds b/data/tutorials/rf_mod.rds
index 661a567..43e6afb 100644
Binary files a/data/tutorials/rf_mod.rds and b/data/tutorials/rf_mod.rds differ
diff --git a/index.Rmd b/index.Rmd
index 1edd218..9d86a22 100644
--- a/index.Rmd
+++ b/index.Rmd
@@ -45,6 +45,10 @@ Images and other materials used here were made available under non-restrictive l
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
+### How to cite this book
+
+Stocker, Hufkens, Aran, Schneider, *Applied Geodata Science*, DOI (TBC)
+
![](./figures/logo_unibern_squid3.png){width="30%"} ![](./figures/geco_logo_fullname.png){width="30%"}