diff --git a/src/Module.cpp b/src/Module.cpp
index b3365a2..5930e96 100644
--- a/src/Module.cpp
+++ b/src/Module.cpp
@@ -736,14 +736,22 @@ ModulePerBaseSequenceQuality::make_grade() {
 
 void
 ModulePerBaseSequenceQuality::write_module(std::ostream &os) {
+  constexpr auto max_precision{std::numeric_limits<double>::digits10};
+  const auto default_precision{os.precision()};
   os << "#Base\tMean\tMedian\tLower Quartile\tUpper Quartile"
      << "\t10th Percentile\t90th Percentile\n";
-
   // GS: TODO make base groups
   for (std::size_t i = 0; i < num_groups; ++i) {
-    os << base_groups[i] << "\t" << group_mean[i] << "\t" << group_median[i]
-       << "\t" << group_lquartile[i] << "\t" << group_uquartile[i] << "\t"
-       << group_ldecile[i] << "\t" << group_udecile[i] << "\n";
+    // clang-format off
+    os << base_groups[i] << "\t"
+       << std::setprecision(max_precision) << group_mean[i] << "\t"
+       << std::fixed << std::setprecision(1) << group_median[i] << "\t"
+       << std::fixed << std::setprecision(1) << group_lquartile[i] << "\t"
+       << std::fixed << std::setprecision(1) << group_uquartile[i] << "\t"
+       << std::fixed << std::setprecision(1) << group_ldecile[i] << "\t"
+       << std::fixed << std::setprecision(1) << group_udecile[i] << "\n"
+       << std::defaultfloat << std::setprecision(default_precision);
+    // clang-format on
   }
 }
 
@@ -869,16 +877,17 @@ ModulePerTileSequenceQuality::make_grade() {
 
 void
 ModulePerTileSequenceQuality::write_module(std::ostream &os) {
-
+  constexpr auto max_precision{std::numeric_limits<double>::digits10};
+  const auto default_precision{os.precision()};
   // prints tiles sorted by value
   os << "#Tile\tBase\tMean\n";
   for (std::size_t i = 0; i < std::size(tiles_sorted); ++i) {
     for (std::size_t j = 0; j < max_read_length; ++j) {
-
       if (std::size(tile_position_quality[tiles_sorted[i]]) >= j) {
         os << tiles_sorted[i] << "\t" << j + 1 << "\t"
-           << tile_position_quality[tiles_sorted[i]][j];
-        os << "\n";
+           << std::setprecision(max_precision)
+           << tile_position_quality[tiles_sorted[i]][j]
+           << std::setprecision(default_precision) << "\n";
       }
     }
   }
@@ -1294,7 +1303,8 @@ ModulePerBaseSequenceContent::make_html_data() {
 const std::string ModulePerSequenceGCContent::module_name =
   "Per sequence GC content";
 ModulePerSequenceGCContent::ModulePerSequenceGCContent(
-  const FalcoConfig &config) : Module(ModulePerSequenceGCContent::module_name) {
+  const FalcoConfig &config) :
+  Module(ModulePerSequenceGCContent::module_name) {
   auto gc_vars = config.limits.find("gc_sequence")->second;
   gc_warn = gc_vars.find("warn")->second;
   gc_error = gc_vars.find("error")->second;
@@ -2152,8 +2162,9 @@ ModuleKmerContent::write_module(std::ostream &os) {
     const std::size_t kmer = kmers_to_report[i].first;
     os << size_t_to_seq(kmer, kmer_size) << "\t" << total_kmer_counts[kmer]
        << "\t"
-       << "0.0" << "\t" << obs_exp_max[kmer] << "\t"
-       << where_obs_exp_is_max[kmer] << "\n";
+       << "0.0"
+       << "\t" << obs_exp_max[kmer] << "\t" << where_obs_exp_is_max[kmer]
+       << "\n";
   }
 }
 
diff --git a/test/md5sum.txt b/test/md5sum.txt
index c1564b8..94afb2f 100644
--- a/test/md5sum.txt
+++ b/test/md5sum.txt
@@ -1,30 +1,30 @@
-37014d8b6e5338c54f6e39a9a65448da  test_output/SRR1853178_1/fastqc_data.txt
-36df1dcab539ba4ef885239fc8524636  test_output/SRR1853178_1/summary.txt
-ce1121532724dbfc9f75408f3b6bb1b8  test_output/SRR3897196_2/fastqc_data.txt
-80cd130958bcb2219f1e5a07d06a3b6e  test_output/SRR3897196_2/summary.txt
-189608afba8bc88f237259a8801417c4  test_output/SRR9624732_1/fastqc_data.txt
+3dedc28a43582799ca5c2de6853e3b67  test_output/SRR10143153_1/fastqc_data.txt
+9ad191925d47a57d4f8b12f21ba0a7c3  test_output/SRR10143153_1/summary.txt
+10a3ea6bdc7e89f7c554060987300a74  test_output/SRR9624732_1/fastqc_data.txt
 c94f94bdfbed9b83f156c15ffea84127  test_output/SRR9624732_1/summary.txt
-a96c16a6ac4cce541f745b25d5b04fef  test_output/SRR10143153_2/fastqc_data.txt
-19f1811f324e4c44154f659bb6e22806  test_output/SRR10143153_2/summary.txt
-1991f6ba435c23642d3141856864ad99  test_output/SRR1772703.lite.1/fastqc_data.txt
+f3247224a624ef3e715251881cbb92d6  test_output/SRR3897196_2/fastqc_data.txt
+80cd130958bcb2219f1e5a07d06a3b6e  test_output/SRR3897196_2/summary.txt
+efe57274c57b831a35ece02a55b10b44  test_output/SRR10124060/fastqc_data.txt
+776f7d1b53bbed8683de9ca1d2529f1e  test_output/SRR10124060/summary.txt
+00499da31b38353a64b3fbf865134f44  test_output/SRR3897196_1/fastqc_data.txt
+b736ee95d5c450ef5c0dda31957b6818  test_output/SRR3897196_1/summary.txt
+f40ed230afd94501978ae4e5b4b723af  test_output/SRR6387347/fastqc_data.txt
+a61f65047e76f93300967cf399d044de  test_output/SRR6387347/summary.txt
+b5b45572ad129a4306d4c1cfdea9a394  test_output/SRR1772703.lite.1/fastqc_data.txt
 ad5727295e7c8de6eb6874837bf1518f  test_output/SRR1772703.lite.1/summary.txt
-657b3a5b77d8a7b9d5e8ff3c08dae765  test_output/SRR9624732_2/fastqc_data.txt
+8241ed3eef4e21c6bc9ab6d55905c45e  test_output/SRR9878537.lite.1/fastqc_data.txt
+e5c40997d4993c07e164ee5598c39cf9  test_output/SRR9878537.lite.1/summary.txt
+b513012ef040d0cb53f311d860326704  test_output/SRR9624732_2/fastqc_data.txt
 fefc5d746f853c14b5e00421ad1ec260  test_output/SRR9624732_2/summary.txt
-e4df74ec74cf5ee69dd76d08825d1b2c  test_output/SRR10124060/fastqc_data.txt
-776f7d1b53bbed8683de9ca1d2529f1e  test_output/SRR10124060/summary.txt
-e5e62fbaefdf730452e0133eca248f69  test_output/SRR891268_2/fastqc_data.txt
+6583ae57d3bb86621ad8dcca23372f81  test_output/SRR1853178_2/fastqc_data.txt
+c331d0f7a6aa9d72be41ac531f9ba269  test_output/SRR1853178_2/summary.txt
+4d1ef8e0aad4027b5e59ef869cd9d196  test_output/SRR1853178_1/fastqc_data.txt
+36df1dcab539ba4ef885239fc8524636  test_output/SRR1853178_1/summary.txt
+b45e9f0c7840b539470d065b4bf2797c  test_output/SRR10143153_2/fastqc_data.txt
+19f1811f324e4c44154f659bb6e22806  test_output/SRR10143153_2/summary.txt
+88b9fabb6c5e41326b5fe93e94875893  test_output/SRR891268_2/fastqc_data.txt
 20a8e50baace4c672622793874a3d7de  test_output/SRR891268_2/summary.txt
-401d183c10a50bdf0eac497c63630918  test_output/SRR9878537.lite.1/fastqc_data.txt
-e5c40997d4993c07e164ee5598c39cf9  test_output/SRR9878537.lite.1/summary.txt
-8334959b07f8baa92548ad939aff5df0  test_output/SRR891268_1/fastqc_data.txt
+3177a87258f3a9edd6a02a740a207b34  test_output/SRR891268_1/fastqc_data.txt
 69e7d0c53cd2e67117637c408b65333a  test_output/SRR891268_1/summary.txt
-985da7c31b11a4cb40686bf20d0df9cd  test_output/SRR6059706.lite.1/fastqc_data.txt
+dbd6ffc33ab0c131f70db7be3398ddae  test_output/SRR6059706.lite.1/fastqc_data.txt
 e348e4bcc7fc6f05e989ac7858d2b287  test_output/SRR6059706.lite.1/summary.txt
-2eb1acd772bf29031455cb38072a396f  test_output/SRR6387347/fastqc_data.txt
-a61f65047e76f93300967cf399d044de  test_output/SRR6387347/summary.txt
-d79d49f81677f19247bbd9cd6021f903  test_output/SRR3897196_1/fastqc_data.txt
-b736ee95d5c450ef5c0dda31957b6818  test_output/SRR3897196_1/summary.txt
-c93b8e4f2f14664419f57fb33edf5b64  test_output/SRR10143153_1/fastqc_data.txt
-9ad191925d47a57d4f8b12f21ba0a7c3  test_output/SRR10143153_1/summary.txt
-940b43bfbddd9d22cac65895c6d37ae8  test_output/SRR1853178_2/fastqc_data.txt
-c331d0f7a6aa9d72be41ac531f9ba269  test_output/SRR1853178_2/summary.txt