A Certain Scientific Railgun Episode Ratings Heatmap
2009 · 3 Seasons · 73 Episodes · Overall Score: 6.6/10 (24 rated)
S1E2: When Working Under a Hot Sun, Rehydration Is Essential (4 votes)
View Episode →Season 1 holds the highest collective average score across the series.
Season 1 Details →Lowest score variance (σ = 0.36), maintaining an average of 6.6.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
| Episode | Season 1 | Season 2 | Season 3 |
|---|---|---|---|
| Ep 1 | 5.3 | – | – |
| Ep 2 | 7.0 | – | – |
| Ep 3 | 6.8 | – | – |
| Ep 4 | 7.0 | – | – |
| Ep 5 | 6.8 | – | – |
| Ep 6 | 6.5 | – | – |
| Ep 7 | 6.8 | – | – |
| Ep 8 | 6.5 | – | – |
| Ep 9 | 6.8 | – | – |
| Ep 10 | 6.8 | – | – |
| Ep 11 | 6.8 | – | – |
| Ep 12 | 6.8 | – | – |
| Ep 13 | 6.2 | – | – |
| Ep 14 | 6.5 | – | – |
| Ep 15 | 6.5 | – | – |
| Ep 16 | 6.8 | – | – |
| Ep 17 | 7.0 | – | – |
| Ep 18 | 6.5 | – | – |
| Ep 19 | 6.5 | – | – |
| Ep 20 | 6.5 | – | – |
| Ep 21 | 6.5 | – | – |
| Ep 22 | 6.5 | – | – |
| Ep 23 | 7.0 | – | – |
| Ep 24 | 7.0 | – | – |
| Ep 25 | – | – | – |
| Season Avg | 6.6 | – | – |
Ratings Analysis & Trajectory
Across 3 seasons and 73 episodes, A Certain Scientific Railgun has earned an overall series rating of 6.6 out of 10. The series displays remarkable consistency across its narrative arc, maintaining reliable ratings from premiere to conclusion.
The single highest-rated hour of television in the series is Season 1, Episode 2 ("When Working Under a Hot Sun, Rehydration Is Essential"), rated at an extraordinary 7.0/10 with 4 ratings. Conversely, the lowest-rated installment is Season 1, Episode 1 ("Electromaster"), landing at 5.3/10.
The most precipitous single-episode shift occurred in Season 1 between Episode 12 ("AIM Burst", 6.8) and Episode 13 ("A Bikini Divides the Eyeline Between Top and Bottom, But a One-piece Shows Off the Figure, So They Only Flatter the Slender", 6.2), a swing of 0.6 points.
Top 10 Highest Rated Episodes of A Certain Scientific Railgun
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 1, Ep 2 | When Working Under a Hot Sun, Rehydration Is Essential | 7.0 | 4 | Oct 9, 2009 |
| #2 | Season 1, Ep 4 | Urban Legends | 7.0 | 4 | Oct 23, 2009 |
| #3 | Season 1, Ep 23 | What Is It You See in Your Eyes Right Now? | 7.0 | 4 | Mar 12, 2010 |
| #4 | Season 1, Ep 24 | Dear My Friends | 7.0 | 4 | Mar 20, 2010 |
| #5 | Season 1, Ep 17 | Tsuzuri's Summer Vacation | 7.0 | 3 | Jan 29, 2010 |
| #6 | Season 1, Ep 3 | Tokiwadai Is Targeted | 6.8 | 4 | Oct 16, 2009 |
| #7 | Season 1, Ep 5 | A Certain Pair of New Trainees | 6.8 | 4 | Oct 30, 2009 |
| #8 | Season 1, Ep 7 | Abilities and Powers | 6.8 | 4 | Nov 13, 2009 |
| #9 | Season 1, Ep 9 | Majority Report | 6.8 | 4 | Nov 27, 2009 |
| #10 | Season 1, Ep 10 | Silent Majority | 6.8 | 4 | Dec 4, 2009 |