add exp 007 with different seeds (#218)

* add exp 007 with diffeten seeds

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experiments/india/007_different_seeds/readme.md

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+# Training models with different seeds
+
+Want to see the effect or training a model with different seeds.
+
+We can see that the results for different seeds can vary by 0.5%,
+and some models being better at different time horizons than others
+
+## Experiments
+- seed 1 - [miszfep5](https://wandb.ai/openclimatefix/india/runs/miszfep5)
+- seed 2 - [cxshv2q4](https://wandb.ai/openclimatefix/india/runs/cxshv2q4)
+- seed 3 - [m46wdrr7](https://wandb.ai/openclimatefix/india/runs/m46wdrr7)
+
+These were trained with 1000 batches, and 300 batches for validation
+
+## Results
+
+| Timestep | s1 MAE % | s2 MAE % | s3 MAE % |
+| --- | --- | --- | --- |
+| 0-0 minutes | 0.066 | 0.061 | 0.066 |
+| 15-15 minutes | 0.064 | 0.058 | 0.064 |
+| 30-45 minutes | 0.065 | 0.060 | 0.063 |
+| 45-60 minutes | 0.066 | 0.060 | 0.063 |
+| 60-120 minutes | 0.063 | 0.060 | 0.063 |
+| 120-240 minutes | 0.063 | 0.063 | 0.065 |
+| 240-360 minutes | 0.064 | 0.066 | 0.065 |
+| 360-480 minutes | 0.065 | 0.066 | 0.066 |
+| 480-720 minutes | 0.067 | 0.066 | 0.065 |
+| 720-1440 minutes | 0.068 | 0.068 | 0.066 |
+| 1440-2880 minutes | 0.071 | 0.072 | 0.071 |
+
+![](mae_steps.png "mae_steps")
+
+![](mae_all_steps.png "mae_steps")