In 6779 free gacha I got:
1* girl 139 times (2.05%).
2* girl 6265 times (92.42%).
3* girl 353 times (5.21%).
4* girl 20 times (0.30%).
5* amp 2 times (0.03%).

I got the following 4* girls from N-gacha:
1) 1x Bianca Tulip
2) 2x Saffron Tulip
3) 2x Lilac
4) 3x Sweetpea
5) 5x Dandelion
6) 2x Di Yu
7) 3x Hinoki Cypress
8) 4x St. Paulia
9) 2x Canola
10) 1x Casablanca
11) 3x Hibisus

From code I got:
1) 1x Violetta Tulip