diff --git a/III/Ovodas/task2_1.py b/III/Ovodas/task2_1.py
index f3d9d3e..9c0dea1 100755
--- a/III/Ovodas/task2_1.py
+++ b/III/Ovodas/task2_1.py
@@ -1,15 +1,16 @@
 #!/usr/bin/python3
 
 import csv
-from math import degrees
+from math import degrees, radians, tan, pi, log
 from shapely.geometry import LineString
 import matplotlib.pyplot as plt
 
 phi_p, phi_s, dphi = 13, 49, 6
-nphi = int((phi_s-phi_p)/dphi)+1
 lambda_v, lambda_r, dlambda = 0, 24, 6
-nlambda = int((lambda_r-lambda_v)/dlambda)+1
 M = 25e6
+phil = round((phi_p+phi_s)/2)
+nphi = int((phi_s-phi_p)/dphi)+1
+nlambda = int((lambda_r-lambda_v)/dlambda)+1
 
 # label orientations
 W, E, N, S = (-25, -5), (10, -5), (-5, 10), (-5, -20)
@@ -18,12 +19,14 @@ krasovskio = {}
 with open("krasovskio.csv") as f:
     for row in csv.DictReader(f):
         krasovskio[float(row['phi'])] = row
+betamm = float(krasovskio[phil]["r"]) * 1000 / M
 
 points = []
 for i in range(nphi):
     phid = phi_p + i*dphi
-    betamm = float(krasovskio[phid]["r"]) * 1000 / M
-    xmm = betamm * float(krasovskio[phid]["lgU"])
+    phi = radians(phid)
+    U = tan(pi/4 + phi/2)
+    xmm = betamm * log(U)
     on_y = []
     for j in range(nlambda):
         lambdad = lambda_v + j*dlambda
diff --git a/III/Ovodas/task2_1b.py b/III/Ovodas/task2_1b.py
deleted file mode 100755
index 9c0dea1..0000000
--- a/III/Ovodas/task2_1b.py
+++ /dev/null
@@ -1,62 +0,0 @@
-#!/usr/bin/python3
-
-import csv
-from math import degrees, radians, tan, pi, log
-from shapely.geometry import LineString
-import matplotlib.pyplot as plt
-
-phi_p, phi_s, dphi = 13, 49, 6
-lambda_v, lambda_r, dlambda = 0, 24, 6
-M = 25e6
-phil = round((phi_p+phi_s)/2)
-nphi = int((phi_s-phi_p)/dphi)+1
-nlambda = int((lambda_r-lambda_v)/dlambda)+1
-
-# label orientations
-W, E, N, S = (-25, -5), (10, -5), (-5, 10), (-5, -20)
-
-krasovskio = {}
-with open("krasovskio.csv") as f:
-    for row in csv.DictReader(f):
-        krasovskio[float(row['phi'])] = row
-betamm = float(krasovskio[phil]["r"]) * 1000 / M
-
-points = []
-for i in range(nphi):
-    phid = phi_p + i*dphi
-    phi = radians(phid)
-    U = tan(pi/4 + phi/2)
-    xmm = betamm * log(U)
-    on_y = []
-    for j in range(nlambda):
-        lambdad = lambda_v + j*dlambda
-        ymm = betamm * lambdad / degrees(1)
-        on_y.append((ymm, xmm))
-    points.append(on_y)
-
-fig, ax = plt.subplots()
-ax.set_aspect('equal')
-ax.axis("off")
-
-
-def annotate(ax, nr, point, heading):
-    text = "{}°".format(nr)
-    ax.annotate(text, point, textcoords="offset points", xytext=heading)
-
-
-# abscises
-for i in range(nphi):
-    row = [points[i][j] for j in range(nlambda)]
-    ax.plot(*(LineString(row).xy), color="xkcd:black", linewidth=.5)
-    annotate(ax, phi_p+i*dphi, row[0], W)
-    annotate(ax, phi_p+i*dphi, row[-1], E)
-
-# ordinates
-for i in range(nlambda):
-    col = [points[j][i] for j in range(nphi)]
-    ax.plot(*(LineString(col).xy), color="xkcd:black", linewidth=.5)
-    annotate(ax, lambda_v+i*dlambda, col[0], S)
-    annotate(ax, lambda_v+i*dlambda, col[-1], N)
-
-if __name__ == '__main__':
-    plt.show()