diff --git a/Common/CMakeLists.txt b/Common/CMakeLists.txt
index f5e638bf8a5c85721180b95b66706fd328fea94a..06e267a0ae5f49c20ded727fd5c0d06a8123ac06 100644
--- a/Common/CMakeLists.txt
+++ b/Common/CMakeLists.txt
@@ -1,7 +1,6 @@
 add_subdirectory(Tests)
 target_sources(test_get_1_outerm PRIVATE derived_types.f90 get_slice_dir.f90
   spher_polyline_area.f90 shpc_close.f90)
-target_sources(test_max_speed_contour_ssh PRIVATE derived_types.f90)
 target_sources(test_nearby_extr PRIVATE derived_types.f90
   read_field_indices.f90 shpc_open.f90 shpc_close.f90
   get_slice_dir.f90)
diff --git a/Inst_eddies/CMakeLists.txt b/Inst_eddies/CMakeLists.txt
index 1a2f62612910c6c3f86c84152715edf5df308ad8..dee4a251d184a2976a95943790db054dc2dfd05d 100644
--- a/Inst_eddies/CMakeLists.txt
+++ b/Inst_eddies/CMakeLists.txt
@@ -1,9 +1,9 @@
 # inst_eddies:
 add_executable(inst_eddies inst_eddies.f90 local_extrema.f90 set_max_speed.f90
-  get_1_outerm.f90 max_speed_contour_ssh.f90 good_contour.f90 mean_speed.f90
-  inside_4.f90 set_all_contours.f90 nearby_extr.f90 get_var.f90 config.f90
-  input_ssh.f90 shpc_create.f90 write_snapshot.f90 ccw_orient.f90
-  write_eddy.f90 set_all_extr.f90 complete_ssh.f90)
+  get_1_outerm.f90 good_contour.f90 mean_speed.f90 set_all_contours.f90
+  nearby_extr.f90 get_var.f90 config.f90 input_ssh.f90 shpc_create.f90
+  write_snapshot.f90 ccw_orient.f90 write_eddy.f90 set_all_extr.f90
+  complete_ssh.f90)
 target_link_libraries(inst_eddies PRIVATE Contour_531::contour_531
   Geometry::geometry NetCDF95::netcdf95 Shapelib_03::shapelib_03
   Numer_Rec_95::numer_rec_95 Jumble::jumble NetCDF_Fortran::netcdff)
@@ -22,14 +22,11 @@ target_sources(test_get_1_outerm PRIVATE get_1_outerm.f90 good_contour.f90
   config.f90 input_ssh.f90 get_var.f90 shpc_create.f90 write_eddy.f90
   ccw_orient.f90)
 target_sources(test_good_contour PRIVATE good_contour.f90)
-target_sources(test_inside_4 PRIVATE inside_4.f90)
 target_sources(test_mean_speed PRIVATE mean_speed.f90)
-target_sources(test_max_speed_contour_ssh PRIVATE max_speed_contour_ssh.f90
-  get_var.f90)
 target_sources(test_nearby_extr PRIVATE nearby_extr.f90)
 target_sources(test_local_extrema PRIVATE local_extrema.f90)
 target_sources(test_set_max_speed PRIVATE set_max_speed.f90 good_contour.f90
-  max_speed_contour_ssh.f90 mean_speed.f90 inside_4.f90 get_var.f90 config.f90
-  input_ssh.f90 shpc_create.f90 ccw_orient.f90 write_eddy.f90 complete_ssh.f90)
+  mean_speed.f90 get_var.f90 config.f90 input_ssh.f90 shpc_create.f90
+  ccw_orient.f90 write_eddy.f90 complete_ssh.f90)
 target_sources(test_write_null PRIVATE shpc_create.f90)
 target_sources(test_complete_ssh PRIVATE complete_ssh.f90)
diff --git a/Inst_eddies/Tests/CMakeLists.txt b/Inst_eddies/Tests/CMakeLists.txt
index 7f80b96f3f9fdd542ca28b1a4640b138e819e79b..5e774b96085d0911b3cf6ccad33ef6985da72431 100644
--- a/Inst_eddies/Tests/CMakeLists.txt
+++ b/Inst_eddies/Tests/CMakeLists.txt
@@ -10,24 +10,12 @@ target_link_libraries(test_good_contour PRIVATE Geometry::geometry
   NetCDF95::netcdf95 Shapelib_03::shapelib_03 Contour_531::contour_531
   Jumble::jumble NetCDF_Fortran::netcdff)
 
-# test_inside_4
-add_executable(test_inside_4 test_inside_4.f90)
-target_link_libraries(test_inside_4 PRIVATE Geometry::geometry
-  Shapelib_03::shapelib_03 Jumble::jumble)
-
 # test_mean_speed
 add_executable(test_mean_speed test_mean_speed.f90)
 target_link_libraries(test_mean_speed PRIVATE Numer_Rec_95::numer_rec_95
   NetCDF95::netcdf95 Shapelib_03::shapelib_03 Contour_531::contour_531
   NetCDF_Fortran::netcdff gpc_f Jumble::jumble)
 
-# test_max_speed_contour_ssh
-add_executable(test_max_speed_contour_ssh
-  test_max_speed_contour_ssh.f90)
-target_link_libraries(test_max_speed_contour_ssh PRIVATE
-  fortrangis::fortranGIS NetCDF95::netcdf95 Contour_531::contour_531
-  Jumble::jumble NetCDF_Fortran::netcdff)
-
 # test_nearby_extr
 add_executable(test_nearby_extr test_nearby_extr.f90
   ${PROJECT_SOURCE_DIR}/Overlap/read_grid.F90
@@ -54,9 +42,8 @@ target_link_libraries(test_set_max_speed PRIVATE Geometry::geometry
 add_executable(test_complete_ssh test_complete_ssh.f90)
 target_link_libraries(test_complete_ssh PRIVATE Jumble::jumble)
 
-foreach(my_target IN ITEMS test_get_1_outerm test_good_contour test_inside_4
-    test_mean_speed test_max_speed_contour_ssh test_nearby_extr
-    test_local_extrema test_set_max_speed test_complete_ssh)
+foreach(my_target IN ITEMS test_get_1_outerm test_good_contour test_mean_speed
+    test_nearby_extr test_local_extrema test_set_max_speed test_complete_ssh)
   set_target_properties(${my_target} PROPERTIES Fortran_MODULE_DIRECTORY
     ${CMAKE_CURRENT_BINARY_DIR}/${my_target}_modules)
   target_include_directories(${my_target} PRIVATE
diff --git a/Inst_eddies/Tests/short_tests.json b/Inst_eddies/Tests/short_tests.json
index cd596d89511e2308c514f5f35e6fe67ade84163f..dfe38c44f9514938b8fe1e6a2307e843340c424a 100644
--- a/Inst_eddies/Tests/short_tests.json
+++ b/Inst_eddies/Tests/short_tests.json
@@ -114,20 +114,6 @@
 	],
 	"stdin_filename": "$src_dir/Inst_eddies/Tests/Input/no_good_contour.txt"
     },
-    "Inside_4_true": {
-	"stdin_filename": "$src_dir/Inst_eddies/Tests/Input/inside_4_true_nml.txt",
-	"command": [
-            "$build_dir/Inst_eddies/Tests/test_inside_4",
-            "$src_dir/Inst_eddies/Tests/Input/outermost_eddy_5"
-	]
-    },
-    "Inside_4_false": {
-	"stdin_filename": "$src_dir/Inst_eddies/Tests/Input/inside_4_false_nml.txt",
-	"command": [
-            "$build_dir/Inst_eddies/Tests/test_inside_4",
-            "$src_dir/Inst_eddies/Tests/Input/outermost_eddy_5"
-	]
-    },
     "Local_extrema": {
 	"input": "f",
 	"command": [
@@ -167,32 +153,6 @@
             "$src_dir/Inst_eddies/Tests/Input/h_2006_01_01_coarse.nc"
 	]
     },
-    "Max_speed_contour_ssh": {
-	"input": "&main_nml /\n",
-	"command": [
-            "$build_dir/Inst_eddies/Tests/test_max_speed_contour_ssh",
-            "$src_dir/Inst_eddies/Tests/Input/Region_1/huv_region_1_2006_01_01.nc",
-            "$src_dir/Inst_eddies/Tests/Input/Region_1/huv_region_1_2006_01_01.nc"
-	]
-    },
-    "Max_speed_contour_ssh_north": {
-	"description": "direction = 2",
-	"input": "&main_nml IND_EXTR= 4,14/\n",
-	"command": [
-            "$build_dir/Inst_eddies/Tests/test_max_speed_contour_ssh",
-            "$src_dir/Inst_eddies/Tests/Input/Region_1/huv_region_1_2006_01_01.nc",
-            "$src_dir/Inst_eddies/Tests/Input/Region_1/huv_region_1_2006_01_01.nc"
-	]
-    },
-    "Max_speed_contour_ssh_missing": {
-	"description": "Missing value in speed.",
-	"input": "&main_nml IND_EXTR= 3, 4/\n",
-	"command": [
-            "$build_dir/Inst_eddies/Tests/test_max_speed_contour_ssh",
-            "$src_dir/Inst_eddies/Tests/Input/huv_2015_11_29.nc",
-            "$src_dir/Inst_eddies/Tests/Input/huv_2015_11_29.nc"
-	]
-    },
     "Mean_speed": {
 	"input": "&main_nml /\n",
 	"symlink": [
diff --git a/Inst_eddies/Tests/test_inside_4.f90 b/Inst_eddies/Tests/test_inside_4.f90
deleted file mode 100644
index 9c7f617ad0018bee1f304ae6a8f186f16ef8751e..0000000000000000000000000000000000000000
--- a/Inst_eddies/Tests/test_inside_4.f90
+++ /dev/null
@@ -1,37 +0,0 @@
-program test_inside_4
-
-  use inside_4_m, only: inside_4
-  use jumble, only: get_command_arg_dyn
-  use shapelib, only: shpfileobject, shpclose, shpobject
-  use shapelib_03, only: shp_open_03, shp_read_object_03
-
-  implicit none
-
-  character(len = :), allocatable:: filename
-  real:: distance(2) = [1., 1.], center(2) = [0., 0.]
-  TYPE(shpfileobject) hshp
-  TYPE(shpobject) psobject
-  real, allocatable:: v(:, :) ! (2, :)
-
-  namelist /main_nml/ distance, center
-
-  !-----------------------------------------------------------------------
-
-  call get_command_arg_dyn(1, filename)
-  print *, "Reading from ", filename, "..."
-  call shp_open_03(hshp, filename, "rb")
-  call shp_read_object_03(hshp, 0, psobject)
-  CALL shpclose(hshp)
-  
-  write(unit = *, nml = main_nml)
-  print *, "Enter namelist main_nml."
-  read(unit = *, nml = main_nml)
-  write(unit = *, nml = main_nml)
-
-  allocate(v(2, psobject%nvertices))
-  v(1, :) = psobject%padfx
-  v(2, :) = psobject%padfy
-
-  print *, "inside_4: ", inside_4(distance, center, v)
-
-end program test_inside_4
diff --git a/Inst_eddies/Tests/test_max_speed_contour_ssh.f90 b/Inst_eddies/Tests/test_max_speed_contour_ssh.f90
deleted file mode 100644
index e641e2bd075897d183de03b04b77c3aa78d23472..0000000000000000000000000000000000000000
--- a/Inst_eddies/Tests/test_max_speed_contour_ssh.f90
+++ /dev/null
@@ -1,67 +0,0 @@
-program test_max_speed_contour_ssh
-
-  use, intrinsic:: ieee_arithmetic, only: ieee_value, IEEE_QUIET_NAN
-  use, intrinsic:: ISO_FORTRAN_ENV
-
-  ! Libraries:
-  use jumble, only: get_command_arg_dyn
-  use netcdf, only: nf90_nowrite
-  use netcdf95, only: nf95_open, nf95_close, nf95_inq_varid, nf95_gw_var
-  use jumble, only: assert
-
-  use get_var_m, only: get_var
-  use max_speed_contour_ssh_m, only: max_speed_contour_ssh
-
-  implicit none
-
-  integer nlon, nlat
-
-  character(len = :), allocatable:: adt_file, velocity_file
-  integer ncid, varid
-  real, allocatable:: ssh(:, :, :) ! (nlon, nlat, 1) sea-surface height, in m
-  real, allocatable:: u(:, :), v(:, :) ! (nlon, nlat) wind, in m s-1
-
-  integer:: ind_extr(2) = [19, 11]
-  ! indices in the two dimensions of the extremum
-  
-  integer:: radius = 3
-
-  namelist /main_nml/ ind_extr, radius
-
-  !----------------------------------------------------------------
-
-  call assert(COMMAND_ARGUMENT_COUNT() == 2, &
-       "Required arguments: ADT-file velocity-file")
-  call get_command_arg_dyn(1, adt_file)
-  call get_command_arg_dyn(2, velocity_file)
-
-  write(unit = error_unit, nml = main_nml)
-  write(unit = error_unit, fmt = *) "Enter namelist main_nml."
-  read(unit = *, nml = main_nml)
-  write(unit = *, nml = main_nml)
-  
-
-  print *, "Reading from ", adt_file, "..."
-  call nf95_open(adt_file, nf90_nowrite, ncid)
-  call nf95_inq_varid(ncid, "adt", varid)
-  call nf95_gw_var(ncid, varid, ssh)
-  call nf95_close(ncid)
-
-  nlon = size(ssh, 1)
-  nlat = size(ssh, 2)
-  allocate(u(nlon, nlat), v(nlon, nlat))
-
-  print *, "Reading from ", velocity_file, "..."
-  call nf95_open(velocity_file, nf90_nowrite, ncid)
-  call get_var(periodic = .false., max_rad_lon = 0, values = u, ncid = ncid, &
-       nlon = nlon, name = "ugos", &
-       new_fill_value = ieee_value(0., IEEE_QUIET_NAN))
-  call get_var(periodic = .false., max_rad_lon = 0, values = v, ncid = ncid, &
-       nlon = nlon, name = "vgos", &
-       new_fill_value = ieee_value(0., IEEE_QUIET_NAN))
-  call nf95_close(ncid)
-
-  print *, "level = ", max_speed_contour_ssh(ssh(:, :, 1), u, v, ind_extr, &
-       radius)
-
-end program test_max_speed_contour_ssh
diff --git a/Inst_eddies/inside_4.f90 b/Inst_eddies/inside_4.f90
deleted file mode 100644
index edf19835d83c2cad9d78e071535dfa9fac141e9f..0000000000000000000000000000000000000000
--- a/Inst_eddies/inside_4.f90
+++ /dev/null
@@ -1,46 +0,0 @@
-module inside_4_m
-
-  implicit none
-
-contains
-
-  logical function inside_4(distance, center, v)
-
-    ! This procedure returns true if the four points center \pm
-    ! (distance(1), 0) and center \pm (0, distance(2)) are inside
-    ! the polygon v.
-
-    use geometry, only: polygon_contains_point
-
-    real, intent(in):: distance(:) ! (2)
-    real, intent(in):: center(:) ! (2) coordinates of the center point
-
-    real, intent(in):: v(:, :) ! (2, :) vertices of the polygon
-    ! The last vertex should repeat the first vertex.
-
-    !-------------------------------------------------------------
-
-    ! On the eastern way:
-    inside_4 = polygon_contains_point(v, [center(1) + distance(1), center(2)])
-
-    if (inside_4) then
-       ! On the northern way:
-       inside_4 = polygon_contains_point(v, &
-            [center(1), center(2) + distance(2)])
-
-       if (inside_4) then
-          ! On the western way:
-          inside_4 = polygon_contains_point(v, &
-               [center(1) - distance(1), center(2)])
-
-          if (inside_4) then
-             ! On the southern way:
-             inside_4 = polygon_contains_point(v, &
-                  [center(1), center(2) - distance(2)])
-          end if
-       end if
-    end if
-
-  end function inside_4
-
-end module inside_4_m
diff --git a/Inst_eddies/max_speed_contour_ssh.f90 b/Inst_eddies/max_speed_contour_ssh.f90
deleted file mode 100644
index 8b70fcefe3de65fe7cea13a994cd70ed67d779b6..0000000000000000000000000000000000000000
--- a/Inst_eddies/max_speed_contour_ssh.f90
+++ /dev/null
@@ -1,75 +0,0 @@
-module max_speed_contour_ssh_m
-
-  implicit none
-
-contains
-
-  pure real function max_speed_contour_ssh(ssh, u, v, ind_extr, radius)
-
-    ! Choose an SSH level by examining the values of velocities inside
-    ! radius.
-
-    use, intrinsic:: IEEE_ARITHMETIC, only: IEEE_IS_NAN
-
-    use derived_types, only: missing_ssh
-
-    real, intent(in):: ssh(:, :), u(:, :), v(:, :)
-    integer, intent(in):: ind_extr(:) ! (2) indices of the extremum in ssh
-
-    integer, intent(in):: radius
-    ! ind_extr + radius - 1 in all four directions is inside outermost
-    ! contour, ind_extr + radius may be outside. radius should be >=
-    ! 2.
-
-    ! Local:
-
-    real v_azim(4, radius - 1)
-    ! azimuthal velocity
-    ! First dimension: direction, index 1 for east, 2 for north, etc.
-    ! Second dimension: grid index, starting one point away from the extremum
-
-    integer l, direction
-    integer, parameter:: east = 1, north = 2, west = 3, south = 4
-
-    !----------------------------------------------------------------------
-
-    ! Assuming that ascending indices in u and v correspond to
-    ! ascending longitude and latitude:
-    v_azim(east, :) = v(ind_extr(1) + 1:ind_extr(1) + radius - 1, &
-         ind_extr(2))
-    v_azim(north, :) = - u(ind_extr(1), ind_extr(2) + 1:ind_extr(2) &
-         + radius - 1)
-    v_azim(west, :) = - v(ind_extr(1) - 1:ind_extr(1) - radius + 1:- 1, &
-         ind_extr(2))
-    v_azim(south, :) = u(ind_extr(1), ind_extr(2) - 1:ind_extr(2) - radius &
-         + 1:- 1)
-
-    if (any(ieee_is_nan(v_azim))) then
-       ! This is strange, we are inside an outermost contour, and yet
-       ! there is a missing value. Well, we will go on with the
-       ! outermost contour as max-speed contour.
-       max_speed_contour_ssh = missing_ssh
-    else
-       if (radius >= 3) then
-          l = maxloc(abs(sum(v_azim, dim = 1) / 4.), dim = 1)
-       else
-          l = 1
-       end if
-       
-       direction = maxloc(abs(v_azim(:, l)), dim = 1)
-
-       select case (direction)
-       case(east)
-          max_speed_contour_ssh = ssh(ind_extr(1) + l, ind_extr(2))
-       case(north)
-          max_speed_contour_ssh = ssh(ind_extr(1), ind_extr(2) + l)
-       case(west)
-          max_speed_contour_ssh = ssh(ind_extr(1) - l, ind_extr(2))
-       case(south)
-          max_speed_contour_ssh = ssh(ind_extr(1), ind_extr(2) - l)
-       end select
-    end if
-
-  end function max_speed_contour_ssh
-  
-end module max_speed_contour_ssh_m